122240142020 has 12 divisors (see below), whose sum is σ = 256704298284. Its totient is φ = 48896056800.

The previous prime is 122240141999. The next prime is 122240142049. The reversal of 122240142020 is 20241042221.

It can be written as a sum of positive squares in 2 ways, for example, as 85225460356 + 37014681664 = 291934^2 + 192392^2 .

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: 6112007101 = 122240142020 / (1 + 2 + 2 + 2 + 4 + 0 + 1 + 4 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 122240141983 and 122240142001.

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, 3056003531 + ... + 3056003570.

It is an arithmetic number, because the mean of its divisors is an integer number (21392024857).

Almost surely, 2^122240142020 is an apocalyptic number.

122240142020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122240142020 is an abundant number, since it is smaller than the sum of its proper divisors (134464156264).

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

122240142020 is a wasteful number, since it uses less digits than its factorization.

122240142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112007110 (or 6112007108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 122240142020 its reverse (20241042221), we get a palindrome (142481184241).

The spelling of 122240142020 in words is "one hundred twenty-two billion, two hundred forty million, one hundred forty-two thousand, twenty".