21000101112010 has 32 divisors (see below), whose sum is σ = 37910294226000. Its totient is φ = 8375573352960.

The previous prime is 21000101111989. The next prime is 21000101112031. The reversal of 21000101112010 is 1021110100012.

It is an interprime number because it is at equal distance from previous prime (21000101111989) and next prime (21000101112031).

It can be written as a sum of positive squares in 8 ways, for example, as 13631107673089 + 7368993438921 = 3692033^2 + 2714589^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79653286 + ... + 79916494.

Almost surely, 2^{21000101112010} is an apocalyptic number.

21000101112010 is a deficient number, since it is larger than the sum of its proper divisors (16910193113990).

21000101112010 is a wasteful number, since it uses less digits than its factorization.

21000101112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286426.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21000101112010 its reverse (1021110100012), we get a palindrome (22021211212022).

The spelling of 21000101112010 in words is "twenty-one trillion, one hundred one million, one hundred twelve thousand, ten".