20022101220021 has 16 divisors (see below), whose sum is σ = 27654367676160. Its totient is φ = 12870207000000.

The previous prime is 20022101219957. The next prime is 20022101220029. The reversal of 20022101220021 is 12002210122002.

It is not a de Polignac number, because 20022101220021 - 2⁶ = 20022101219957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022101220029) 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, 156920605 + ... + 157048146.

It is an arithmetic number, because the mean of its divisors is an integer number (1728397979760).

Almost surely, 2^{20022101220021} is an apocalyptic number.

It is an amenable number.

20022101220021 is a deficient number, since it is larger than the sum of its proper divisors (7632266456139).

20022101220021 is a wasteful number, since it uses less digits than its factorization.

20022101220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313969516.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20022101220021 its reverse (12002210122002), we get a palindrome (32024311342023).

The spelling of 20022101220021 in words is "twenty trillion, twenty-two billion, one hundred one million, two hundred twenty thousand, twenty-one".