20021200111201 has 8 divisors (see below), whose sum is σ = 20032613556480. Its totient is φ = 20009787142032.

The previous prime is 20021200111193. The next prime is 20021200111207. The reversal of 20021200111201 is 10211100212002.

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 20021200111201 - 2³ = 20021200111193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021200111207) 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, 115909366 + ... + 116081968.

It is an arithmetic number, because the mean of its divisors is an integer number (2504076694560).

Almost surely, 2^{20021200111201} is an apocalyptic number.

It is an amenable number.

20021200111201 is a deficient number, since it is larger than the sum of its proper divisors (11413445279).

20021200111201 is a wasteful number, since it uses less digits than its factorization.

20021200111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238055.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021200111201 its reverse (10211100212002), we get a palindrome (30232300323203).

The spelling of 20021200111201 in words is "twenty trillion, twenty-one billion, two hundred million, one hundred eleven thousand, two hundred one".