121022100210 has 64 divisors (see below), whose sum is σ = 316891626624. Its totient is φ = 29335564800.

The previous prime is 121022100203. The next prime is 121022100217. The reversal of 121022100210 is 12001220121.

It is an interprime number because it is at equal distance from previous prime (121022100203) and next prime (121022100217).

It is not an unprimeable number, because it can be changed into a prime (121022100217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5156422 + ... + 5179838.

It is an arithmetic number, because the mean of its divisors is an integer number (4951431666).

Almost surely, 2^121022100210 is an apocalyptic number.

121022100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121022100210 is an abundant number, since it is smaller than the sum of its proper divisors (195869526414).

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

121022100210 is a wasteful number, since it uses less digits than its factorization.

121022100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39099.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121022100210 its reverse (12001220121), we get a palindrome (133023320331).

The spelling of 121022100210 in words is "one hundred twenty-one billion, twenty-two million, one hundred thousand, two hundred ten".