20001301020 has 36 divisors (see below), whose sum is σ = 60670613640. Its totient is φ = 5333680224.

The previous prime is 20001300971. The next prime is 20001301031. The reversal of 20001301020 is 2010310002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 20001300993 and 20001301011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55558990 + ... + 55559349.

Almost surely, 2^20001301020 is an apocalyptic number.

20001301020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001301020 is an abundant number, since it is smaller than the sum of its proper divisors (40669312620).

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

20001301020 is a wasteful number, since it uses less digits than its factorization.

20001301020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111118354 (or 111118349 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20001301020 its reverse (2010310002), we get a palindrome (22011611022).

The spelling of 20001301020 in words is "twenty billion, one million, three hundred one thousand, twenty".