20012121010002 has 16 divisors (see below), whose sum is σ = 43662809476512. Its totient is φ = 6064279093920.

The previous prime is 20012121009997. The next prime is 20012121010117. The reversal of 20012121010002 is 20001012121002.

It is a super-3 number, since 3×20012121010002³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20012121010002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151606977283 + ... + 151606977414.

It is an arithmetic number, because the mean of its divisors is an integer number (2728925592282).

Almost surely, 2^{20012121010002} is an apocalyptic number.

20012121010002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012121010002 is an abundant number, since it is smaller than the sum of its proper divisors (23650688466510).

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

20012121010002 is a wasteful number, since it uses less digits than its factorization.

20012121010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303213954713.

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

Adding to 20012121010002 its reverse (20001012121002), we get a palindrome (40013133131004).

The spelling of 20012121010002 in words is "twenty trillion, twelve billion, one hundred twenty-one million, ten thousand, two".