21012101210962 has 16 divisors (see below), whose sum is σ = 34148257510752. Its totient is φ = 9658093032000.

The previous prime is 21012101210923. The next prime is 21012101210963. The reversal of 21012101210962 is 26901210121012.

It is a self number, because there is not a number n which added to its sum of digits gives 21012101210962.

It is not an unprimeable number, because it can be changed into a prime (21012101210963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7186079664 + ... + 7186082587.

It is an arithmetic number, because the mean of its divisors is an integer number (2134266094422).

Almost surely, 2^{21012101210962} is an apocalyptic number.

21012101210962 is a deficient number, since it is larger than the sum of its proper divisors (13136156299790).

21012101210962 is a wasteful number, since it uses less digits than its factorization.

21012101210962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14372162313.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 21012101210962 its reverse (26901210121012), we get a palindrome (47913311331974).

The spelling of 21012101210962 in words is "twenty-one trillion, twelve billion, one hundred one million, two hundred ten thousand, nine hundred sixty-two".