2021220022111 has 8 divisors (see below), whose sum is σ = 2029793225504. Its totient is φ = 2012648359680.

The previous prime is 2021220022069. The next prime is 2021220022141. The reversal of 2021220022111 is 1112200221202.

It is a happy number.

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 2021220022111 - 2¹³ = 2021220013919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021220022141) 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, 2282731 + ... + 3041923.

It is an arithmetic number, because the mean of its divisors is an integer number (253724153188).

Almost surely, 2^{2021220022111} is an apocalyptic number.

2021220022111 is a deficient number, since it is larger than the sum of its proper divisors (8573203393).

2021220022111 is a wasteful number, since it uses less digits than its factorization.

2021220022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770481.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021220022111 its reverse (1112200221202), we get a palindrome (3133420243313).

The spelling of 2021220022111 in words is "two trillion, twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred eleven".