123202221140 has 12 divisors (see below), whose sum is σ = 258724664436. Its totient is φ = 49280888448.

The previous prime is 123202221067. The next prime is 123202221193. The reversal of 123202221140 is 41122202321.

It can be written as a sum of positive squares in 2 ways, for example, as 73557033796 + 49645187344 = 271214^2 + 222812^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6160111057 = 123202221140 / (1 + 2 + 3 + 2 + 0 + 2 + 2 + 2 + 1 + 1 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080055509 + ... + 3080055548.

It is an arithmetic number, because the mean of its divisors is an integer number (21560388703).

Almost surely, 2^123202221140 is an apocalyptic number.

123202221140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123202221140 is an abundant number, since it is smaller than the sum of its proper divisors (135522443296).

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

123202221140 is a wasteful number, since it uses less digits than its factorization.

123202221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6160111066 (or 6160111064 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123202221140 its reverse (41122202321), we get a palindrome (164324423461).

The spelling of 123202221140 in words is "one hundred twenty-three billion, two hundred two million, two hundred twenty-one thousand, one hundred forty".