2212161552440 has 32 divisors (see below), whose sum is σ = 5688415421280. Its totient is φ = 758455389312.

The previous prime is 2212161552439. The next prime is 2212161552451. The reversal of 2212161552440 is 442551612122.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2212161552440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3950288207 + ... + 3950288766.

It is an arithmetic number, because the mean of its divisors is an integer number (177762981915).

Almost surely, 2^{2212161552440} is an apocalyptic number.

2212161552440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212161552440 is an abundant number, since it is smaller than the sum of its proper divisors (3476253868840).

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

2212161552440 is a wasteful number, since it uses less digits than its factorization.

2212161552440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900576991 (or 7900576987 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 2212161552440 in words is "two trillion, two hundred twelve billion, one hundred sixty-one million, five hundred fifty-two thousand, four hundred forty".