20042011213021 has 16 divisors (see below), whose sum is σ = 23467941439488. Its totient is φ = 16756924694400.

The previous prime is 20042011213019. The next prime is 20042011213061. The reversal of 20042011213021 is 12031211024002.

It is a cyclic number.

It is not a de Polignac number, because 20042011213021 - 2¹ = 20042011213019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20042011213021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042011213061) 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, 4499325 + ... + 7767106.

It is an arithmetic number, because the mean of its divisors is an integer number (1466746339968).

Almost surely, 2^{20042011213021} is an apocalyptic number.

It is an amenable number.

20042011213021 is a deficient number, since it is larger than the sum of its proper divisors (3425930226467).

20042011213021 is a wasteful number, since it uses less digits than its factorization.

20042011213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12272172.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20042011213021 its reverse (12031211024002), we get a palindrome (32073222237023).

The spelling of 20042011213021 in words is "twenty trillion, forty-two billion, eleven million, two hundred thirteen thousand, twenty-one".