102125438220 has 96 divisors (see below), whose sum is σ = 310672942272. Its totient is φ = 24916082688.

The previous prime is 102125438201. The next prime is 102125438221. The reversal of 102125438220 is 22834521201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (102125438221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491197 + ... + 667476.

It is an arithmetic number, because the mean of its divisors is an integer number (3236176482).

Almost surely, 2^102125438220 is an apocalyptic number.

102125438220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102125438220 is an abundant number, since it is smaller than the sum of its proper divisors (208547504052).

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

102125438220 is a wasteful number, since it uses less digits than its factorization.

102125438220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158811 (or 1158809 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 102125438220 its reverse (22834521201), we get a palindrome (124959959421).

The spelling of 102125438220 in words is "one hundred two billion, one hundred twenty-five million, four hundred thirty-eight thousand, two hundred twenty".