21111011202122 has 8 divisors (see below), whose sum is σ = 31676115636000. Its totient is φ = 10552305990124.

The previous prime is 21111011202107. The next prime is 21111011202131. The reversal of 21111011202122 is 22120211011112.

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

It is a super-2 number, since 2×21111011202122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21111011202122.

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, 1599797222 + ... + 1599810417.

It is an arithmetic number, because the mean of its divisors is an integer number (3959514454500).

Almost surely, 2^{21111011202122} is an apocalyptic number.

21111011202122 is a deficient number, since it is larger than the sum of its proper divisors (10565104433878).

21111011202122 is a wasteful number, since it uses less digits than its factorization.

21111011202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199610940.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21111011202122 its reverse (22120211011112), we get a palindrome (43231222213234).

The spelling of 21111011202122 in words is "twenty-one trillion, one hundred eleven billion, eleven million, two hundred two thousand, one hundred twenty-two".