21010010213030 has 32 divisors (see below), whose sum is σ = 37868109738624. Its totient is φ = 8392877853696.

The previous prime is 21010010212991. The next prime is 21010010213039. The reversal of 21010010213030 is 3031201001012.

It is a junction number, because it is equal to n+sod(n) for n = 21010010212996 and 21010010213014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010010213039) 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, 32339474 + ... + 32982746.

It is an arithmetic number, because the mean of its divisors is an integer number (1183378429332).

Almost surely, 2^{21010010213030} is an apocalyptic number.

21010010213030 is a deficient number, since it is larger than the sum of its proper divisors (16858099525594).

21010010213030 is a wasteful number, since it uses less digits than its factorization.

21010010213030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647600.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21010010213030 its reverse (3031201001012), we get a palindrome (24041211214042).

The spelling of 21010010213030 in words is "twenty-one trillion, ten billion, ten million, two hundred thirteen thousand, thirty".