101220021120121 has 4 divisors (see below), whose sum is σ = 101348636141392. Its totient is φ = 101091406098852.

The previous prime is 101220021120107. The next prime is 101220021120139. The reversal of 101220021120121 is 121021120022101.

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 a de Polignac number, because none of the positive numbers 2^k-101220021120121 is a prime.

It is a super-2 number, since 2×101220021120121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220021120095 and 101220021120104.

It is not an unprimeable number, because it can be changed into a prime (101220021124121) 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, 64307509455 + ... + 64307511028.

It is an arithmetic number, because the mean of its divisors is an integer number (25337159035348).

Almost surely, 2^{101220021120121} is an apocalyptic number.

It is an amenable number.

101220021120121 is a deficient number, since it is larger than the sum of its proper divisors (128615021271).

101220021120121 is an equidigital number, since it uses as much as digits as its factorization.

101220021120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128615021270.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101220021120121 its reverse (121021120022101), we get a palindrome (222241141142222).

The spelling of 101220021120121 in words is "one hundred one trillion, two hundred twenty billion, twenty-one million, one hundred twenty thousand, one hundred twenty-one".