10101210012 has 72 divisors (see below), whose sum is σ = 27363956256. Its totient is φ = 3133620864.

The previous prime is 10101210001. The next prime is 10101210013. The reversal of 10101210012 is 21001210101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10101209976 and 10101210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101210013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134223 + ... + 195494.

It is an arithmetic number, because the mean of its divisors is an integer number (380054948).

Almost surely, 2^10101210012 is an apocalyptic number.

10101210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10101210012 is an abundant number, since it is smaller than the sum of its proper divisors (17262746244).

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

10101210012 is a wasteful number, since it uses less digits than its factorization.

10101210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329787 (or 329782 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10101210012 its reverse (21001210101), we get a palindrome (31102420113).

It can be divided in two parts, 10101 and 210012, that multiplied together give a palindrome (2121331212).

The spelling of 10101210012 in words is "ten billion, one hundred one million, two hundred ten thousand, twelve".