20030102111021 has 16 divisors (see below), whose sum is σ = 21280932748800. Its totient is φ = 18811719891888.

The previous prime is 20030102111017. The next prime is 20030102111059. The reversal of 20030102111021 is 12011120103002.

It is not a de Polignac number, because 20030102111021 - 2² = 20030102111017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20030102110987 and 20030102111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030102111081) 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, 7801931 + ... + 10046408.

It is an arithmetic number, because the mean of its divisors is an integer number (1330058296800).

Almost surely, 2^{20030102111021} is an apocalyptic number.

It is an amenable number.

20030102111021 is a deficient number, since it is larger than the sum of its proper divisors (1250830637779).

20030102111021 is a wasteful number, since it uses less digits than its factorization.

20030102111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17849248.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20030102111021 its reverse (12011120103002), we get a palindrome (32041222214023).

The spelling of 20030102111021 in words is "twenty trillion, thirty billion, one hundred two million, one hundred eleven thousand, twenty-one".