101220121000001 has 4 divisors (see below), whose sum is σ = 105620995826112. Its totient is φ = 96819246173892.

The previous prime is 101220120999983. The next prime is 101220121000007. The reversal of 101220121000001 is 100000121022101.

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 a cyclic number.

It is not a de Polignac number, because 101220121000001 - 2⁴² = 96822074488897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220121000007) 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, 2200437413021 + ... + 2200437413066.

It is an arithmetic number, because the mean of its divisors is an integer number (26405248956528).

Almost surely, 2^{101220121000001} is an apocalyptic number.

It is an amenable number.

101220121000001 is a deficient number, since it is larger than the sum of its proper divisors (4400874826111).

101220121000001 is an equidigital number, since it uses as much as digits as its factorization.

101220121000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400874826110.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101220121000001 its reverse (100000121022101), we get a palindrome (201220242022102).

The spelling of 101220121000001 in words is "one hundred one trillion, two hundred twenty billion, one hundred twenty-one million, one", and thus it is an aban number.