122154140050 has 24 divisors (see below), whose sum is σ = 240571802196. Its totient is φ = 45987440640.

The previous prime is 122154139969. The next prime is 122154140071. The reversal of 122154140050 is 50041451221.

It can be written as a sum of positive squares in 6 ways, for example, as 45979796041 + 76174344009 = 214429^2 + 275997^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 122154139997 and 122154140024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71854527 + ... + 71856226.

Almost surely, 2^122154140050 is an apocalyptic number.

122154140050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122154140050 is a deficient number, since it is larger than the sum of its proper divisors (118417662146).

122154140050 is a wasteful number, since it uses less digits than its factorization.

122154140050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143710782 (or 143710777 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 122154140050 its reverse (50041451221), we get a palindrome (172195591271).

The spelling of 122154140050 in words is "one hundred twenty-two billion, one hundred fifty-four million, one hundred forty thousand, fifty".