1302213002121 has 12 divisors (see below), whose sum is σ = 1883752741572. Its totient is φ = 866859660576.

The previous prime is 1302213002117. The next prime is 1302213002159. The reversal of 1302213002121 is 1212003122031.

1302213002121 is a `hidden beast` number, since 1 + 302 + 21 + 300 + 21 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 993588310521 + 308624691600 = 996789^2 + 555540^2 .

It is not a de Polignac number, because 1302213002121 - 2² = 1302213002117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1302213002094 and 1302213002103.

It is not an unprimeable number, because it can be changed into a prime (1302213002171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106855306 + ... + 106867491.

It is an arithmetic number, because the mean of its divisors is an integer number (156979395131).

Almost surely, 2^{1302213002121} is an apocalyptic number.

It is an amenable number.

1302213002121 is a deficient number, since it is larger than the sum of its proper divisors (581539739451).

1302213002121 is a wasteful number, since it uses less digits than its factorization.

1302213002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213723480 (or 213723477 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1302213002121 its reverse (1212003122031), we get a palindrome (2514216124152).

The spelling of 1302213002121 in words is "one trillion, three hundred two billion, two hundred thirteen million, two thousand, one hundred twenty-one".