101210022121 has 24 divisors (see below), whose sum is σ = 116194401344. Its totient is φ = 87617445120.

The previous prime is 101210022119. The next prime is 101210022139. The reversal of 101210022121 is 121220012101.

It is not a de Polignac number, because 101210022121 - 2¹ = 101210022119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101210022101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1015636 + ... + 1110826.

Almost surely, 2^101210022121 is an apocalyptic number.

It is an amenable number.

101210022121 is a deficient number, since it is larger than the sum of its proper divisors (14984379223).

101210022121 is a wasteful number, since it uses less digits than its factorization.

101210022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95521 (or 95504 counting only the distinct ones).

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

Adding to 101210022121 its reverse (121220012101), we get a palindrome (222430034222).

The spelling of 101210022121 in words is "one hundred one billion, two hundred ten million, twenty-two thousand, one hundred twenty-one".