1210011002121 has 16 divisors (see below), whose sum is σ = 1660753188864. Its totient is φ = 783196078224.

The previous prime is 1210011002099. The next prime is 1210011002159. The reversal of 1210011002121 is 1212001100121.

It is not a de Polignac number, because 1210011002121 - 2¹⁰ = 1210011001097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210011002097 and 1210011002106.

It is not an unprimeable number, because it can be changed into a prime (1210011002021) 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, 28062081 + ... + 28105166.

It is an arithmetic number, because the mean of its divisors is an integer number (103797074304).

Almost surely, 2^{1210011002121} is an apocalyptic number.

It is an amenable number.

1210011002121 is a deficient number, since it is larger than the sum of its proper divisors (450742186743).

1210011002121 is a wasteful number, since it uses less digits than its factorization.

1210011002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56167460.

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

Adding to 1210011002121 its reverse (1212001100121), we get a palindrome (2422012102242).

The spelling of 1210011002121 in words is "one trillion, two hundred ten billion, eleven million, two thousand, one hundred twenty-one".