121202021210 has 16 divisors (see below), whose sum is σ = 218865134592. Its totient is φ = 48324920400.

The previous prime is 121202021183. The next prime is 121202021221. The reversal of 121202021210 is 12120202121.

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, 19482746 + ... + 19488965.

It is an arithmetic number, because the mean of its divisors is an integer number (13679070912).

Almost surely, 2^121202021210 is an apocalyptic number.

121202021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121202021210 is a deficient number, since it is larger than the sum of its proper divisors (97663113382).

121202021210 is a wasteful number, since it uses less digits than its factorization.

121202021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38972029.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121202021210 its reverse (12120202121), we get a palindrome (133322223331).

The spelling of 121202021210 in words is "one hundred twenty-one billion, two hundred two million, twenty-one thousand, two hundred ten".