212020012100001 has 24 divisors (see below), whose sum is σ = 333009990606720. Its totient is φ = 119620693981152.

The previous prime is 212020012099939. The next prime is 212020012100123. The reversal of 212020012100001 is 100001210020212.

It is not a de Polignac number, because 212020012100001 - 2¹¹ = 212020012097953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020012100001.

It is not an unprimeable number, because it can be changed into a prime (212020012100401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9128551726 + ... + 9128574951.

It is an arithmetic number, because the mean of its divisors is an integer number (13875416275280).

Almost surely, 2^{212020012100001} is an apocalyptic number.

212020012100001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212020012100001 is a deficient number, since it is larger than the sum of its proper divisors (120989978506719).

212020012100001 is a wasteful number, since it uses less digits than its factorization.

212020012100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18257126773 (or 18257126766 counting only the distinct ones).

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

Adding to 212020012100001 its reverse (100001210020212), we get a palindrome (312021222120213).

The spelling of 212020012100001 in words is "two hundred twelve trillion, twenty billion, twelve million, one hundred thousand, one".