212012102001 has 16 divisors (see below), whose sum is σ = 323097752448. Its totient is φ = 121137888000.

The previous prime is 212012101997. The next prime is 212012102009. The reversal of 212012102001 is 100201210212.

It is not a de Polignac number, because 212012102001 - 2² = 212012101997 is a prime.

It is a super-3 number, since 3×212012102001³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212012102009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273720 + ... + 706361.

It is an arithmetic number, because the mean of its divisors is an integer number (20193609528).

Almost surely, 2^212012102001 is an apocalyptic number.

212012102001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212012102001 is a deficient number, since it is larger than the sum of its proper divisors (111085650447).

212012102001 is a wasteful number, since it uses less digits than its factorization.

212012102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990392.

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

Adding to 212012102001 its reverse (100201210212), we get a palindrome (312213312213).

The spelling of 212012102001 in words is "two hundred twelve billion, twelve million, one hundred two thousand, one".