121201020202 has 16 divisors (see below), whose sum is σ = 191547757440. Its totient is φ = 57402929232.

The previous prime is 121201020169. The next prime is 121201020221. The reversal of 121201020202 is 202020102121.

It is a happy number.

It is a super-2 number, since 2×121201020202² (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 7 ways as a sum of consecutive naturals, for example, 12785577 + ... + 12795052.

It is an arithmetic number, because the mean of its divisors is an integer number (11971734840).

Almost surely, 2^121201020202 is an apocalyptic number.

121201020202 is a deficient number, since it is larger than the sum of its proper divisors (70346737238).

121201020202 is a wasteful number, since it uses less digits than its factorization.

121201020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25580757.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121201020202 its reverse (202020102121), we get a palindrome (323221122323).

The spelling of 121201020202 in words is "one hundred twenty-one billion, two hundred one million, twenty thousand, two hundred two".