20120030100021 has 8 divisors (see below), whose sum is σ = 27064111285440. Its totient is φ = 13294651157312.

The previous prime is 20120030100017. The next prime is 20120030100073. The reversal of 20120030100021 is 12000103002102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120030100021 - 2² = 20120030100017 is a prime.

It is a super-2 number, since 2×20120030100021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120230100021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29675560281 + ... + 29675560958.

It is an arithmetic number, because the mean of its divisors is an integer number (3383013910680).

Almost surely, 2^{20120030100021} is an apocalyptic number.

It is an amenable number.

20120030100021 is a deficient number, since it is larger than the sum of its proper divisors (6944081185419).

20120030100021 is a wasteful number, since it uses less digits than its factorization.

20120030100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59351121355.

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

Adding to 20120030100021 its reverse (12000103002102), we get a palindrome (32120133102123).

The spelling of 20120030100021 in words is "twenty trillion, one hundred twenty billion, thirty million, one hundred thousand, twenty-one".