121231212202 has 16 divisors (see below), whose sum is σ = 184464618624. Its totient is φ = 59743530000.

The previous prime is 121231212197. The next prime is 121231212211. The reversal of 121231212202 is 202212132121.

It is a self number, because there is not a number n which added to its sum of digits gives 121231212202.

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, 339427 + ... + 598057.

It is an arithmetic number, because the mean of its divisors is an integer number (11529038664).

Almost surely, 2^121231212202 is an apocalyptic number.

121231212202 is a deficient number, since it is larger than the sum of its proper divisors (63233406422).

121231212202 is a wasteful number, since it uses less digits than its factorization.

121231212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262005.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121231212202 its reverse (202212132121), we get a palindrome (323443344323).

The spelling of 121231212202 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred twelve thousand, two hundred two".