121421110202 has 16 divisors (see below), whose sum is σ = 209021402880. Its totient is φ = 51819886608.

The previous prime is 121421110189. The next prime is 121421110211. The reversal of 121421110202 is 202011124121.

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, 18140873 + ... + 18147564.

It is an arithmetic number, because the mean of its divisors is an integer number (13063837680).

Almost surely, 2^121421110202 is an apocalyptic number.

121421110202 is a deficient number, since it is larger than the sum of its proper divisors (87600292678).

121421110202 is a wasteful number, since it uses less digits than its factorization.

121421110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36288685.

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

Adding to 121421110202 its reverse (202011124121), we get a palindrome (323432234323).

The spelling of 121421110202 in words is "one hundred twenty-one billion, four hundred twenty-one million, one hundred ten thousand, two hundred two".