10121212012021 has 32 divisors (see below), whose sum is σ = 11204137397376. Its totient is φ = 9066388320000.

The previous prime is 10121212011971. The next prime is 10121212012063. The reversal of 10121212012021 is 12021021212101.

It is not a de Polignac number, because 10121212012021 - 2³¹ = 10119064528373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121212011986 and 10121212012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121212012421) 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, 225429451 + ... + 225474343.

It is an arithmetic number, because the mean of its divisors is an integer number (350129293668).

Almost surely, 2^{10121212012021} is an apocalyptic number.

10121212012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10121212012021 is a deficient number, since it is larger than the sum of its proper divisors (1082925385355).

10121212012021 is a wasteful number, since it uses less digits than its factorization.

10121212012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45973.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121212012021 its reverse (12021021212101), we get a palindrome (22142233224122).

The spelling of 10121212012021 in words is "ten trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, twenty-one".