22220611512 has 128 divisors (see below), whose sum is σ = 63310325760. Its totient is φ = 6433243520.

The previous prime is 22220611451. The next prime is 22220611537. The reversal of 22220611512 is 21511602222.

It is a super-2 number, since 2×22220611512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7205923 + ... + 7209005.

It is an arithmetic number, because the mean of its divisors is an integer number (494611920).

Almost surely, 2^22220611512 is an apocalyptic number.

22220611512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22220611512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31655162880).

22220611512 is an abundant number, since it is smaller than the sum of its proper divisors (41089714248).

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

22220611512 is a wasteful number, since it uses less digits than its factorization.

22220611512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 22220611512 in words is "twenty-two billion, two hundred twenty million, six hundred eleven thousand, five hundred twelve".