22011011220021 has 8 divisors (see below), whose sum is σ = 30624015610560. Its totient is φ = 14036007154752.

The previous prime is 22011011220019. The next prime is 22011011220047. The reversal of 22011011220021 is 12002211011022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22011011220021 - 2¹ = 22011011220019 is a prime.

It is a super-2 number, since 2×22011011220021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011011220061) 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, 159500081236 + ... + 159500081373.

It is an arithmetic number, because the mean of its divisors is an integer number (3828001951320).

Almost surely, 2^{22011011220021} is an apocalyptic number.

It is an amenable number.

22011011220021 is a deficient number, since it is larger than the sum of its proper divisors (8613004390539).

22011011220021 is a wasteful number, since it uses less digits than its factorization.

22011011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319000162635.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22011011220021 its reverse (12002211011022), we get a palindrome (34013222231043).

The spelling of 22011011220021 in words is "twenty-two trillion, eleven billion, eleven million, two hundred twenty thousand, twenty-one".