1210122200111 has 8 divisors (see below), whose sum is σ = 1320350974464. Its totient is φ = 1099929703320.

The previous prime is 1210122200099. The next prime is 1210122200143. The reversal of 1210122200111 is 1110022210121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210122200111 is a prime.

It is a super-3 number, since 3×1210122200111³ (a number of 37 digits) contains 333 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 (1210122200191) 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, 8999615 + ... + 9133088.

It is an arithmetic number, because the mean of its divisors is an integer number (165043871808).

Almost surely, 2^{1210122200111} is an apocalyptic number.

1210122200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210122200111 is a deficient number, since it is larger than the sum of its proper divisors (110228774353).

1210122200111 is a wasteful number, since it uses less digits than its factorization.

1210122200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18138781.

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

Adding to 1210122200111 its reverse (1110022210121), we get a palindrome (2320144410232).

The spelling of 1210122200111 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, one hundred eleven".