20101012212001 has 16 divisors (see below), whose sum is σ = 23045161789440. Its totient is φ = 17175021074640.

The previous prime is 20101012211981. The next prime is 20101012212013. The reversal of 20101012212001 is 10021221010102.

It is a cyclic number.

It is not a de Polignac number, because 20101012212001 - 2⁷ = 20101012211873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20101012012001) 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, 16336680 + ... + 17523958.

It is an arithmetic number, because the mean of its divisors is an integer number (1440322611840).

Almost surely, 2^{20101012212001} is an apocalyptic number.

It is an amenable number.

20101012212001 is a deficient number, since it is larger than the sum of its proper divisors (2944149577439).

20101012212001 is a wasteful number, since it uses less digits than its factorization.

20101012212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194924.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101012212001 its reverse (10021221010102), we get a palindrome (30122233222103).

The spelling of 20101012212001 in words is "twenty trillion, one hundred one billion, twelve million, two hundred twelve thousand, one".