21022012010111 has 16 divisors (see below), whose sum is σ = 24851936624640. Its totient is φ = 17401209359040.

The previous prime is 21022012010101. The next prime is 21022012010159. The reversal of 21022012010111 is 11101021022012.

It is a cyclic number.

It is not a de Polignac number, because 21022012010111 - 2⁶ = 21022012010047 is a prime.

It is a super-2 number, since 2×21022012010111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022012010101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101018846 + ... + 101226731.

It is an arithmetic number, because the mean of its divisors is an integer number (1553246039040).

Almost surely, 2^{21022012010111} is an apocalyptic number.

21022012010111 is a deficient number, since it is larger than the sum of its proper divisors (3829924614529).

21022012010111 is a wasteful number, since it uses less digits than its factorization.

21022012010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202246094.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21022012010111 its reverse (11101021022012), we get a palindrome (32123033032123).

The spelling of 21022012010111 in words is "twenty-one trillion, twenty-two billion, twelve million, ten thousand, one hundred eleven".