121211212202 has 16 divisors (see below), whose sum is σ = 192536248320. Its totient is φ = 57033363648.

The previous prime is 121211212103. The next prime is 121211212289. The reversal of 121211212202 is 202212112121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52823 + ... + 495189.

It is an arithmetic number, because the mean of its divisors is an integer number (12033515520).

Almost surely, 2^121211212202 is an apocalyptic number.

121211212202 is a deficient number, since it is larger than the sum of its proper divisors (71325036118).

121211212202 is a wasteful number, since it uses less digits than its factorization.

121211212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450445.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121211212202 its reverse (202212112121), we get a palindrome (323423324323).

The spelling of 121211212202 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, two hundred two".