125212221200 has 120 divisors (see below), whose sum is σ = 339486396480. Its totient is φ = 43961612800.

The previous prime is 125212221161. The next prime is 125212221217. The reversal of 125212221200 is 2122212521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363044 + ... + 618243.

It is an arithmetic number, because the mean of its divisors is an integer number (2829053304).

Almost surely, 2^125212221200 is an apocalyptic number.

125212221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125212221200 is an abundant number, since it is smaller than the sum of its proper divisors (214274175280).

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

125212221200 is a wasteful number, since it uses less digits than its factorization.

125212221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981345 (or 981334 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 125212221200 its reverse (2122212521), we get a palindrome (127334433721).

The spelling of 125212221200 in words is "one hundred twenty-five billion, two hundred twelve million, two hundred twenty-one thousand, two hundred".