20121014402121 has 4 divisors (see below), whose sum is σ = 26828019202832. Its totient is φ = 13414009601412.

The previous prime is 20121014402089. The next prime is 20121014402219. The reversal of 20121014402121 is 12120441012102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20121014402121 - 2⁵ = 20121014402089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121014402921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353502400351 + ... + 3353502400356.

It is an arithmetic number, because the mean of its divisors is an integer number (6707004800708).

Almost surely, 2^{20121014402121} is an apocalyptic number.

It is an amenable number.

20121014402121 is a deficient number, since it is larger than the sum of its proper divisors (6707004800711).

20121014402121 is an equidigital number, since it uses as much as digits as its factorization.

20121014402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707004800710.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20121014402121 its reverse (12120441012102), we get a palindrome (32241455414223).

The spelling of 20121014402121 in words is "twenty trillion, one hundred twenty-one billion, fourteen million, four hundred two thousand, one hundred twenty-one".