21001012330110 has 32 divisors (see below), whose sum is σ = 50436279551520. Its totient is φ = 5596508848128.

The previous prime is 21001012330031. The next prime is 21001012330121. The reversal of 21001012330110 is 1103321010012.

It is a happy number.

It is a super-2 number, since 2×21001012330110² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21001012330110.

It is a congruent number.

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, 235023747 + ... + 235113086.

It is an arithmetic number, because the mean of its divisors is an integer number (1576133735985).

Almost surely, 2^{21001012330110} is an apocalyptic number.

21001012330110 is an abundant number, since it is smaller than the sum of its proper divisors (29435267221410).

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

21001012330110 is a wasteful number, since it uses less digits than its factorization.

21001012330110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470138332.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21001012330110 its reverse (1103321010012), we get a palindrome (22104333340122).

The spelling of 21001012330110 in words is "twenty-one trillion, one billion, twelve million, three hundred thirty thousand, one hundred ten".