1220010212111 has 16 divisors (see below), whose sum is σ = 1269397980000. Its totient is φ = 1171113127296.

The previous prime is 1220010212101. The next prime is 1220010212119. The reversal of 1220010212111 is 1112120100221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220010212111 is a prime.

It is a super-2 number, since 2×1220010212111² (a number of 25 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 (1220010212119) 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, 27536885 + ... + 27581153.

It is an arithmetic number, because the mean of its divisors is an integer number (79337373750).

Almost surely, 2^{1220010212111} is an apocalyptic number.

1220010212111 is a deficient number, since it is larger than the sum of its proper divisors (49387767889).

1220010212111 is a wasteful number, since it uses less digits than its factorization.

1220010212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49786.

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

Adding to 1220010212111 its reverse (1112120100221), we get a palindrome (2332130312332).

The spelling of 1220010212111 in words is "one trillion, two hundred twenty billion, ten million, two hundred twelve thousand, one hundred eleven".