102011001011020 has 12 divisors (see below), whose sum is σ = 214223102123184. Its totient is φ = 40804400404400.

The previous prime is 102011001011011. The next prime is 102011001011027. The reversal of 102011001011020 is 20110100110201.

It is a super-2 number, since 2×102011001011020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102011001010988 and 102011001011006.

It is not an unprimeable number, because it can be changed into a prime (102011001011027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550275025256 + ... + 2550275025295.

It is an arithmetic number, because the mean of its divisors is an integer number (17851925176932).

Almost surely, 2^{102011001011020} is an apocalyptic number.

102011001011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011001011020 is an abundant number, since it is smaller than the sum of its proper divisors (112212101112164).

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

102011001011020 is a wasteful number, since it uses less digits than its factorization.

102011001011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100550050560 (or 5100550050558 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 102011001011020 its reverse (20110100110201), we get a palindrome (122121101121221).

The spelling of 102011001011020 in words is "one hundred two trillion, eleven billion, one million, eleven thousand, twenty".