101221012121202 has 24 divisors (see below), whose sum is σ = 219312711034560. Its totient is φ = 33740257665240.

The previous prime is 101221012121197. The next prime is 101221012121221. The reversal of 101221012121202 is 202121210122101.

101221012121202 is a `hidden beast` number, since 101 + 221 + 0 + 121 + 21 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1455427 + ... + 14302457.

It is an arithmetic number, because the mean of its divisors is an integer number (9138029626440).

Almost surely, 2^{101221012121202} is an apocalyptic number.

101221012121202 is an abundant number, since it is smaller than the sum of its proper divisors (118091698913358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101221012121202 is a wasteful number, since it uses less digits than its factorization.

101221012121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284758 (or 13284755 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 101221012121202 its reverse (202121210122101), we get a palindrome (303342222243303).

The spelling of 101221012121202 in words is "one hundred one trillion, two hundred twenty-one billion, twelve million, one hundred twenty-one thousand, two hundred two".