21220122022110 has 96 divisors (see below), whose sum is σ = 62263430218080. Its totient is φ = 4966883308800.

The previous prime is 21220122022069. The next prime is 21220122022117. The reversal of 21220122022110 is 1122022102212.

It is a happy number.

21220122022110 is a `hidden beast` number, since 2 + 1 + 220 + 1 + 220 + 221 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220122022117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369531061 + ... + 369588480.

It is an arithmetic number, because the mean of its divisors is an integer number (648577398105).

Almost surely, 2^{21220122022110} is an apocalyptic number.

21220122022110 is an abundant number, since it is smaller than the sum of its proper divisors (41043308195970).

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

21220122022110 is a wasteful number, since it uses less digits than its factorization.

21220122022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739119594 (or 739119591 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21220122022110 its reverse (1122022102212), we get a palindrome (22342144124322).

The spelling of 21220122022110 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, twenty-two thousand, one hundred ten".