125101663212 has 24 divisors (see below), whose sum is σ = 291963870576. Its totient is φ = 41691984448.

The previous prime is 125101663177. The next prime is 125101663217. The reversal of 125101663212 is 212366101521.

It is a super-2 number, since 2×125101663212² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125101663212.

It is not an unprimeable number, because it can be changed into a prime (125101663217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010283 + ... + 1127330.

It is an arithmetic number, because the mean of its divisors is an integer number (12165161274).

Almost surely, 2^125101663212 is an apocalyptic number.

125101663212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125101663212 is an abundant number, since it is smaller than the sum of its proper divisors (166862207364).

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

125101663212 is a wasteful number, since it uses less digits than its factorization.

125101663212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142497 (or 2142495 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 125101663212 its reverse (212366101521), we get a palindrome (337467764733).

The spelling of 125101663212 in words is "one hundred twenty-five billion, one hundred one million, six hundred sixty-three thousand, two hundred twelve".