21212021011022 has 8 divisors (see below), whose sum is σ = 32001950774376. Its totient is φ = 10544704086232.

The previous prime is 21212021010997. The next prime is 21212021011099. The reversal of 21212021011022 is 22011012021212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30653209208 + ... + 30653209899.

It is an arithmetic number, because the mean of its divisors is an integer number (4000243846797).

Almost surely, 2^{21212021011022} is an apocalyptic number.

21212021011022 is a deficient number, since it is larger than the sum of its proper divisors (10789929763354).

21212021011022 is a wasteful number, since it uses less digits than its factorization.

21212021011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61306419282.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21212021011022 its reverse (22011012021212), we get a palindrome (43223033032234).

The spelling of 21212021011022 in words is "twenty-one trillion, two hundred twelve billion, twenty-one million, eleven thousand, twenty-two".