1002120101010 has 48 divisors (see below), whose sum is σ = 2977728302016. Its totient is φ = 229056022944.

The previous prime is 1002120100987. The next prime is 1002120101023. The reversal of 1002120101010 is 101010212001.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1002120100983 and 1002120101001.

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, 795332784 + ... + 795334043.

It is an arithmetic number, because the mean of its divisors is an integer number (62036006292).

Almost surely, 2^{1002120101010} is an apocalyptic number.

1002120101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002120101010 is an abundant number, since it is smaller than the sum of its proper divisors (1975608201006).

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

1002120101010 is a wasteful number, since it uses less digits than its factorization.

1002120101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590666847 (or 1590666844 counting only the distinct ones).

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

Adding to 1002120101010 its reverse (101010212001), we get a palindrome (1103130313011).

The spelling of 1002120101010 in words is "one trillion, two billion, one hundred twenty million, one hundred one thousand, ten".