21220101212910 has 32 divisors (see below), whose sum is σ = 51453276350112. Its totient is φ = 5600356608000.

The previous prime is 21220101212903. The next prime is 21220101212911. The reversal of 21220101212910 is 1921210102212.

It is a super-2 number, since 2×21220101212910² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220101212911) 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, 3646062591 + ... + 3646068410.

It is an arithmetic number, because the mean of its divisors is an integer number (1607914885941).

Almost surely, 2^{21220101212910} is an apocalyptic number.

21220101212910 is an abundant number, since it is smaller than the sum of its proper divisors (30233175137202).

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

21220101212910 is a wasteful number, since it uses less digits than its factorization.

21220101212910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292131108.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 21220101212910 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, two hundred twelve thousand, nine hundred ten".