1210112121 has 8 divisors (see below), whose sum is σ = 1657090624. Its totient is φ = 784937520.

The previous prime is 1210112117. The next prime is 1210112153. The reversal of 1210112121 is 1212110121.

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

It is not a de Polignac number, because 1210112121 - 2² = 1210112117 is a prime.

It is a super-2 number, since 2×1210112121² = 2928742690782237282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210112097 and 1210112106.

It is not an unprimeable number, because it can be changed into a prime (1210112221) 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, 5450845 + ... + 5451066.

It is an arithmetic number, because the mean of its divisors is an integer number (207136328).

Almost surely, 2^1210112121 is an apocalyptic number.

It is an amenable number.

1210112121 is a deficient number, since it is larger than the sum of its proper divisors (446978503).

1210112121 is a wasteful number, since it uses less digits than its factorization.

1210112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901951.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1210112121 is about 34786.6658505813. The cubic root of 1210112121 is about 1065.6351493557.

Adding to 1210112121 its reverse (1212110121), we get a palindrome (2422222242).

The spelling of 1210112121 in words is "one billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-one".