21010102201030 has 32 divisors (see below), whose sum is σ = 37857157756704. Its totient is φ = 8395381061376.

The previous prime is 21010102201019. The next prime is 21010102201031. The reversal of 21010102201030 is 3010220101012.

It is a self number, because there is not a number n which added to its sum of digits gives 21010102201030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010102201031) 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, 194118909 + ... + 194227111.

It is an arithmetic number, because the mean of its divisors is an integer number (1183036179897).

Almost surely, 2^{21010102201030} is an apocalyptic number.

21010102201030 is a deficient number, since it is larger than the sum of its proper divisors (16847055555674).

21010102201030 is a wasteful number, since it uses less digits than its factorization.

21010102201030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128040.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21010102201030 its reverse (3010220101012), we get a palindrome (24020322302042).

The spelling of 21010102201030 in words is "twenty-one trillion, ten billion, one hundred two million, two hundred one thousand, thirty".