10101220125 has 32 divisors (see below), whose sum is σ = 16870623744. Its totient is φ = 5367384000.

The previous prime is 10101220121. The next prime is 10101220147. The reversal of 10101220125 is 52102210101.

It is not a de Polignac number, because 10101220125 - 2² = 10101220121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101220121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51927 + ... + 151323.

It is an arithmetic number, because the mean of its divisors is an integer number (527206992).

Almost surely, 2^10101220125 is an apocalyptic number.

10101220125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10101220125 is a deficient number, since it is larger than the sum of its proper divisors (6769403619).

10101220125 is an equidigital number, since it uses as much as digits as its factorization.

10101220125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99686 (or 99676 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 10101220125 its reverse (52102210101), we get a palindrome (62203430226).

The spelling of 10101220125 in words is "ten billion, one hundred one million, two hundred twenty thousand, one hundred twenty-five".