21010010022111 has 8 divisors (see below), whose sum is σ = 30560014577664. Its totient is φ = 12733339407320.

The previous prime is 21010010022101. The next prime is 21010010022139. The reversal of 21010010022111 is 11122001001012.

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

It is a cyclic number.

It is not a de Polignac number, because 21010010022111 - 2⁶ = 21010010022047 is a prime.

It is a super-2 number, since 2×21010010022111² (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 (21010010022101) 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, 318333485151 + ... + 318333485216.

It is an arithmetic number, because the mean of its divisors is an integer number (3820001822208).

Almost surely, 2^{21010010022111} is an apocalyptic number.

21010010022111 is a deficient number, since it is larger than the sum of its proper divisors (9550004555553).

21010010022111 is a wasteful number, since it uses less digits than its factorization.

21010010022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636666970381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21010010022111 its reverse (11122001001012), we get a palindrome (32132011023123).

The spelling of 21010010022111 in words is "twenty-one trillion, ten billion, ten million, twenty-two thousand, one hundred eleven".