21211010213001 has 96 divisors (see below), whose sum is σ = 34723085443200. Its totient is φ = 11451887032320.

The previous prime is 21211010212991. The next prime is 21211010213011. The reversal of 21211010213001 is 10031201011212.

It is an interprime number because it is at equal distance from previous prime (21211010212991) and next prime (21211010213011).

It is not a de Polignac number, because 21211010213001 - 2⁶ = 21211010212937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211010213011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3977310331 + ... + 3977315663.

It is an arithmetic number, because the mean of its divisors is an integer number (361698806700).

Almost surely, 2^{21211010213001} is an apocalyptic number.

21211010213001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21211010213001 is a deficient number, since it is larger than the sum of its proper divisors (13512075230199).

21211010213001 is a wasteful number, since it uses less digits than its factorization.

21211010213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8919 (or 8912 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21211010213001 its reverse (10031201011212), we get a palindrome (31242211224213).

The spelling of 21211010213001 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred thirteen thousand, one".