22021211011111 has 8 divisors (see below), whose sum is σ = 23762675678000. Its totient is φ = 20286535681152.

The previous prime is 22021211011061. The next prime is 22021211011117. The reversal of 22021211011111 is 11111011212022.

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

It is not a de Polignac number, because 22021211011111 - 2¹³ = 22021211002919 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 (22021211011117) 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, 1697327490 + ... + 1697340463.

It is an arithmetic number, because the mean of its divisors is an integer number (2970334459750).

Almost surely, 2^{22021211011111} is an apocalyptic number.

22021211011111 is a deficient number, since it is larger than the sum of its proper divisors (1741464666889).

22021211011111 is a wasteful number, since it uses less digits than its factorization.

22021211011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394668465.

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

Adding to 22021211011111 its reverse (11111011212022), we get a palindrome (33132222223133).

The spelling of 22021211011111 in words is "twenty-two trillion, twenty-one billion, two hundred eleven million, eleven thousand, one hundred eleven".