1212210010111 has 8 divisors (see below), whose sum is σ = 1283969591424. Its totient is φ = 1140500774400.

The previous prime is 1212210010057. The next prime is 1212210010157. The reversal of 1212210010111 is 1110100122121.

It is a happy number.

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 1212210010111 - 2²¹ = 1212207912959 is a prime.

It is a super-2 number, since 2×1212210010111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212210010091 and 1212210010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210016111) 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, 12536815 + ... + 12633136.

It is an arithmetic number, because the mean of its divisors is an integer number (160496198928).

Almost surely, 2^{1212210010111} is an apocalyptic number.

1212210010111 is a deficient number, since it is larger than the sum of its proper divisors (71759581313).

1212210010111 is a wasteful number, since it uses less digits than its factorization.

1212210010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25172801.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212210010111 its reverse (1110100122121), we get a palindrome (2322310132232).

The spelling of 1212210010111 in words is "one trillion, two hundred twelve billion, two hundred ten million, ten thousand, one hundred eleven".