121211021202 has 64 divisors (see below), whose sum is σ = 257137480704. Its totient is φ = 38024017920.

The previous prime is 121211021161. The next prime is 121211021249. The reversal of 121211021202 is 202120112121.

It is a super-2 number, since 2×121211021202² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19493598 + ... + 19499814.

It is an arithmetic number, because the mean of its divisors is an integer number (4017773136).

Almost surely, 2^121211021202 is an apocalyptic number.

121211021202 is an abundant number, since it is smaller than the sum of its proper divisors (135926459502).

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

121211021202 is a wasteful number, since it uses less digits than its factorization.

121211021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121211021202 its reverse (202120112121), we get a palindrome (323331133323).

The spelling of 121211021202 in words is "one hundred twenty-one billion, two hundred eleven million, twenty-one thousand, two hundred two".