101012001020 has 48 divisors (see below), whose sum is σ = 243089495040. Its totient is φ = 34538301504.

The previous prime is 101012001007. The next prime is 101012001037. The reversal of 101012001020 is 20100210101.

It is a junction number, because it is equal to n+sod(n) for n = 101012000989 and 101012001007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931610 + ... + 1034369.

It is an arithmetic number, because the mean of its divisors is an integer number (5064364480).

Almost surely, 2^101012001020 is an apocalyptic number.

101012001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101012001020 is an abundant number, since it is smaller than the sum of its proper divisors (142077494020).

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

101012001020 is a wasteful number, since it uses less digits than its factorization.

101012001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966362 (or 1966360 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101012001020 its reverse (20100210101), we get a palindrome (121112211121).

The spelling of 101012001020 in words is "one hundred one billion, twelve million, one thousand, twenty".