222651215136 has 144 divisors (see below), whose sum is σ = 724541073984. Its totient is φ = 63533348352.

The previous prime is 222651215107. The next prime is 222651215141. The reversal of 222651215136 is 631512156222.

222651215136 is a `hidden beast` number, since 2 + 2 + 2 + 6 + 512 + 1 + 5 + 136 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 222651215136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1516426 + ... + 1656758.

It is an arithmetic number, because the mean of its divisors is an integer number (5031535236).

Almost surely, 2^222651215136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222651215136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362270536992).

222651215136 is an abundant number, since it is smaller than the sum of its proper divisors (501889858848).

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

222651215136 is a wasteful number, since it uses less digits than its factorization.

222651215136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141143 (or 141132 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 222651215136 in words is "two hundred twenty-two billion, six hundred fifty-one million, two hundred fifteen thousand, one hundred thirty-six".