1213200102121 has 16 divisors (see below), whose sum is σ = 1447280640000. Its totient is φ = 994341311568.

The previous prime is 1213200102067. The next prime is 1213200102131. The reversal of 1213200102121 is 1212010023121.

It is a cyclic number.

It is not a de Polignac number, because 1213200102121 - 2¹⁵ = 1213200069353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213200102095 and 1213200102104.

It is not an unprimeable number, because it can be changed into a prime (1213200102131) 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, 773481 + ... + 1739158.

It is an arithmetic number, because the mean of its divisors is an integer number (90455040000).

Almost surely, 2^{1213200102121} is an apocalyptic number.

It is an amenable number.

1213200102121 is a deficient number, since it is larger than the sum of its proper divisors (234080537879).

1213200102121 is a wasteful number, since it uses less digits than its factorization.

1213200102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515668.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1213200102121 its reverse (1212010023121), we get a palindrome (2425210125242).

The spelling of 1213200102121 in words is "one trillion, two hundred thirteen billion, two hundred million, one hundred two thousand, one hundred twenty-one".