2221302312021 has 32 divisors (see below), whose sum is σ = 3405984261120. Its totient is φ = 1277244057600.

The previous prime is 2221302311971. The next prime is 2221302312023. The reversal of 2221302312021 is 1202132031222.

It is not a de Polignac number, because 2221302312021 - 2⁶ = 2221302311957 is a prime.

It is a super-2 number, since 2×2221302312021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221302312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31642620 + ... + 31712741.

It is an arithmetic number, because the mean of its divisors is an integer number (106437008160).

Almost surely, 2^{2221302312021} is an apocalyptic number.

It is an amenable number.

2221302312021 is a deficient number, since it is larger than the sum of its proper divisors (1184681949099).

2221302312021 is a wasteful number, since it uses less digits than its factorization.

2221302312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63355437.

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

Adding to 2221302312021 its reverse (1202132031222), we get a palindrome (3423434343243).

The spelling of 2221302312021 in words is "two trillion, two hundred twenty-one billion, three hundred two million, three hundred twelve thousand, twenty-one".