21011210101002 has 64 divisors (see below), whose sum is σ = 46994146638336. Its totient is φ = 6208575946560.

The previous prime is 21011210100917. The next prime is 21011210101081. The reversal of 21011210101002 is 20010101211012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17855088 + ... + 18995435.

It is an arithmetic number, because the mean of its divisors is an integer number (734283541224).

Almost surely, 2^{21011210101002} is an apocalyptic number.

21011210101002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011210101002 is an abundant number, since it is smaller than the sum of its proper divisors (25982936537334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011210101002 is a wasteful number, since it uses less digits than its factorization.

21011210101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36850755.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21011210101002 its reverse (20010101211012), we get a palindrome (41021311312014).

The spelling of 21011210101002 in words is "twenty-one trillion, eleven billion, two hundred ten million, one hundred one thousand, two".