21111202122022 has 8 divisors (see below), whose sum is σ = 31832597964672. Its totient is φ = 10500336133800.

The previous prime is 21111202122011. The next prime is 21111202122079. The reversal of 21111202122022 is 22022120211112.

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, 27632463129 + ... + 27632463892.

It is an arithmetic number, because the mean of its divisors is an integer number (3979074745584).

Almost surely, 2^{21111202122022} is an apocalyptic number.

21111202122022 is a deficient number, since it is larger than the sum of its proper divisors (10721395842650).

21111202122022 is a wasteful number, since it uses less digits than its factorization.

21111202122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55264927214.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21111202122022 its reverse (22022120211112), we get a palindrome (43133322333134).

The spelling of 21111202122022 in words is "twenty-one trillion, one hundred eleven billion, two hundred two million, one hundred twenty-two thousand, twenty-two".