1212210022111 has 8 divisors (see below), whose sum is σ = 1322466210000. Its totient is φ = 1101963047040.

The previous prime is 1212210022097. The next prime is 1212210022157. The reversal of 1212210022111 is 1112200122121.

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 1212210022111 - 2¹⁵ = 1212209989343 is a prime.

It is a super-2 number, since 2×1212210022111² (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 (1212210022171) 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, 2026636 + ... + 2555713.

It is an arithmetic number, because the mean of its divisors is an integer number (165308276250).

Almost surely, 2^{1212210022111} is an apocalyptic number.

1212210022111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212210022111 is a deficient number, since it is larger than the sum of its proper divisors (110256187889).

1212210022111 is a wasteful number, since it uses less digits than its factorization.

1212210022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606409.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212210022111 its reverse (1112200122121), we get a palindrome (2324410144232).

The spelling of 1212210022111 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty-two thousand, one hundred eleven".