121221110202 has 32 divisors (see below), whose sum is σ = 245825496000. Its totient is φ = 39847060608.

The previous prime is 121221110147. The next prime is 121221110221. The reversal of 121221110202 is 202011122121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363483 + ... + 612014.

It is an arithmetic number, because the mean of its divisors is an integer number (7682046750).

Almost surely, 2^121221110202 is an apocalyptic number.

121221110202 is an abundant number, since it is smaller than the sum of its proper divisors (124604385798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121221110202 is a wasteful number, since it uses less digits than its factorization.

121221110202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975790.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121221110202 its reverse (202011122121), we get a palindrome (323232232323).

The spelling of 121221110202 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred ten thousand, two hundred two".