1210231100121 has 16 divisors (see below), whose sum is σ = 1708737617664. Its totient is φ = 759282439424.

The previous prime is 1210231100101. The next prime is 1210231100147. The reversal of 1210231100121 is 1210011320121.

It is a cyclic number.

It is not a de Polignac number, because 1210231100121 - 2¹³ = 1210231091929 is a prime.

It is a super-3 number, since 3×1210231100121³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1210231100121.

It is not an unprimeable number, because it can be changed into a prime (1210231100101) 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, 720906 + ... + 1714691.

It is an arithmetic number, because the mean of its divisors is an integer number (106796101104).

Almost surely, 2^{1210231100121} is an apocalyptic number.

It is an amenable number.

1210231100121 is a deficient number, since it is larger than the sum of its proper divisors (498506517543).

1210231100121 is a wasteful number, since it uses less digits than its factorization.

1210231100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445360.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1210231100121 its reverse (1210011320121), we get a palindrome (2420242420242).

The spelling of 1210231100121 in words is "one trillion, two hundred ten billion, two hundred thirty-one million, one hundred thousand, one hundred twenty-one".