121040210402 has 16 divisors (see below), whose sum is σ = 188327626080. Its totient is φ = 58302895392.

The previous prime is 121040210387. The next prime is 121040210419. The reversal of 121040210402 is 204012040121.

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, 9633752 + ... + 9646307.

It is an arithmetic number, because the mean of its divisors is an integer number (11770476630).

Almost surely, 2^121040210402 is an apocalyptic number.

121040210402 is a deficient number, since it is larger than the sum of its proper divisors (67287415678).

121040210402 is a wasteful number, since it uses less digits than its factorization.

121040210402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19280177.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121040210402 its reverse (204012040121), we get a palindrome (325052250523).

The spelling of 121040210402 in words is "one hundred twenty-one billion, forty million, two hundred ten thousand, four hundred two".