20010012030021 has 16 divisors (see below), whose sum is σ = 28734554209536. Its totient is φ = 12312898166976.

The previous prime is 20010012030017. The next prime is 20010012030053. The reversal of 20010012030021 is 12003021001002.

It is not a de Polignac number, because 20010012030021 - 2² = 20010012030017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010012029979 and 20010012030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010012020021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19394685 + ... + 20400338.

It is an arithmetic number, because the mean of its divisors is an integer number (1795909638096).

Almost surely, 2^{20010012030021} is an apocalyptic number.

It is an amenable number.

20010012030021 is a deficient number, since it is larger than the sum of its proper divisors (8724542179515).

20010012030021 is a wasteful number, since it uses less digits than its factorization.

20010012030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39807932.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20010012030021 its reverse (12003021001002), we get a palindrome (32013033031023).

The spelling of 20010012030021 in words is "twenty trillion, ten billion, twelve million, thirty thousand, twenty-one".