222220250040400 has 60 divisors (see below), whose sum is σ = 533885852798172. Its totient is φ = 88887816632320.

The previous prime is 222220250040353. The next prime is 222220250040407. The reversal of 222220250040400 is 4040052022222.

It can be written as a sum of positive squares in 6 ways, for example, as 14709771550224 + 207510478490176 = 3835332^2 + 14405224^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220250040407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162260904 + ... + 163624696.

Almost surely, 2^{222220250040400} is an apocalyptic number.

222220250040400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220250040400 is an abundant number, since it is smaller than the sum of its proper divisors (311665602757772).

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

222220250040400 is a wasteful number, since it uses less digits than its factorization.

222220250040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771168 (or 1771157 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The spelling of 222220250040400 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred fifty million, forty thousand, four hundred".