20021112021211 has 8 divisors (see below), whose sum is σ = 23876108745984. Its totient is φ = 16414824762600.

The previous prime is 20021112021179. The next prime is 20021112021241. The reversal of 20021112021211 is 11212021112002.

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 20021112021211 - 2⁵ = 20021112021179 is a prime.

It is a super-2 number, since 2×20021112021211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021112021241) 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, 62177366365 + ... + 62177366686.

It is an arithmetic number, because the mean of its divisors is an integer number (2984513593248).

Almost surely, 2^{20021112021211} is an apocalyptic number.

20021112021211 is a deficient number, since it is larger than the sum of its proper divisors (3854996724773).

20021112021211 is a wasteful number, since it uses less digits than its factorization.

20021112021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124354733081.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20021112021211 its reverse (11212021112002), we get a palindrome (31233133133213).

The spelling of 20021112021211 in words is "twenty trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred eleven".