2021221120233 has 24 divisors (see below), whose sum is σ = 3207861151968. Its totient is φ = 1128123412416.

The previous prime is 2021221120231. The next prime is 2021221120249. The reversal of 2021221120233 is 3320211221202.

It is not a de Polignac number, because 2021221120233 - 2¹ = 2021221120231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2021221120231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159875116 + ... + 159887757.

It is an arithmetic number, because the mean of its divisors is an integer number (133660881332).

Almost surely, 2^{2021221120233} is an apocalyptic number.

It is an amenable number.

2021221120233 is a deficient number, since it is larger than the sum of its proper divisors (1186640031735).

2021221120233 is a wasteful number, since it uses less digits than its factorization.

2021221120233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319762933 (or 319762926 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2021221120233 its reverse (3320211221202), we get a palindrome (5341432341435).

The spelling of 2021221120233 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred thirty-three".