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122021112001 = 743164227607
BaseRepresentation
bin111000110100100000…
…1100110100011000001
3102122221212020201221111
41301221001212203001
53444344401041001
6132020011523321
711546540224135
oct1615101464301
9378855221844
10122021112001
1147826811518
121b794759541
13b677b44029
145c979393c5
153292638851
hex1c690668c1

122021112001 has 4 divisors (see below), whose sum is σ = 122185340352. Its totient is φ = 121856883652.

The previous prime is 122021111969. The next prime is 122021112023. The reversal of 122021112001 is 100211120221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100211120221 = 234357005227.

It is a cyclic number.

It is not a de Polignac number, because 122021112001 - 25 = 122021111969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122021112061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82113061 + ... + 82114546.

It is an arithmetic number, because the mean of its divisors is an integer number (30546335088).

Almost surely, 2122021112001 is an apocalyptic number.

It is an amenable number.

122021112001 is a deficient number, since it is larger than the sum of its proper divisors (164228351).

122021112001 is an equidigital number, since it uses as much as digits as its factorization.

122021112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164228350.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122021112001 its reverse (100211120221), we get a palindrome (222232232222).

The spelling of 122021112001 in words is "one hundred twenty-two billion, twenty-one million, one hundred twelve thousand, one".

Divisors: 1 743 164227607 122021112001