2121212012001 has 32 divisors (see below), whose sum is σ = 2897502537600. Its totient is φ = 1379611021824.

The previous prime is 2121212011979. The next prime is 2121212012057. The reversal of 2121212012001 is 1002102121212.

It is not a de Polignac number, because 2121212012001 - 2⁶ = 2121212011937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121212012501) 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, 695705925 + ... + 695708973.

It is an arithmetic number, because the mean of its divisors is an integer number (90546954300).

Almost surely, 2^{2121212012001} is an apocalyptic number.

It is an amenable number.

2121212012001 is a deficient number, since it is larger than the sum of its proper divisors (776290525599).

2121212012001 is a wasteful number, since it uses less digits than its factorization.

2121212012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7745.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121212012001 its reverse (1002102121212), we get a palindrome (3123314133213).

The spelling of 2121212012001 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, one".