122111021001 has 4 divisors (see below), whose sum is σ = 162814694672. Its totient is φ = 81407347332.

The previous prime is 122111020957. The next prime is 122111021023. The reversal of 122111021001 is 100120111221.

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.

It is not a de Polignac number, because 122111021001 - 2⁶ = 122111020937 is a prime.

It is a super-2 number, since 2×122111021001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122111021101) 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, 20351836831 + ... + 20351836836.

It is an arithmetic number, because the mean of its divisors is an integer number (40703673668).

Almost surely, 2^122111021001 is an apocalyptic number.

It is an amenable number.

122111021001 is a deficient number, since it is larger than the sum of its proper divisors (40703673671).

122111021001 is an equidigital number, since it uses as much as digits as its factorization.

122111021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40703673670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 122111021001 its reverse (100120111221), we get a palindrome (222231132222).

The spelling of 122111021001 in words is "one hundred twenty-two billion, one hundred eleven million, twenty-one thousand, one".