121010212101 has 16 divisors (see below), whose sum is σ = 165909639168. Its totient is φ = 78397444800.

The previous prime is 121010212033. The next prime is 121010212151. The reversal of 121010212101 is 101212010121.

It is not a de Polignac number, because 121010212101 - 2⁹ = 121010211589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010212151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572805 + ... + 755066.

It is an arithmetic number, because the mean of its divisors is an integer number (10369352448).

Almost surely, 2^121010212101 is an apocalyptic number.

It is an amenable number.

121010212101 is a deficient number, since it is larger than the sum of its proper divisors (44899427067).

121010212101 is a wasteful number, since it uses less digits than its factorization.

121010212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328732.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121010212101 its reverse (101212010121), we get a palindrome (222222222222).

The spelling of 121010212101 in words is "one hundred twenty-one billion, ten million, two hundred twelve thousand, one hundred one".