1220140408672 has 24 divisors (see below), whose sum is σ = 2543454455976. Its totient is φ = 574183721472.

The previous prime is 1220140408667. The next prime is 1220140408679. The reversal of 1220140408672 is 2768040410221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220140408679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121452038 + ... + 1121453125.

It is an arithmetic number, because the mean of its divisors is an integer number (105977268999).

Almost surely, 2^{1220140408672} is an apocalyptic number.

It is an amenable number.

1220140408672 is an abundant number, since it is smaller than the sum of its proper divisors (1323314047304).

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

1220140408672 is a wasteful number, since it uses less digits than its factorization.

1220140408672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242905190 (or 2242905182 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

Adding to 1220140408672 its reverse (2768040410221), we get a palindrome (3988180818893).

The spelling of 1220140408672 in words is "one trillion, two hundred twenty billion, one hundred forty million, four hundred eight thousand, six hundred seventy-two".