1202202210121 has 4 divisors (see below), whose sum is σ = 1311493320144. Its totient is φ = 1092911100100.

The previous prime is 1202202210113. The next prime is 1202202210151. The reversal of 1202202210121 is 1210122022021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202202210121 - 2³ = 1202202210113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202202210095 and 1202202210104.

It is not an unprimeable number, because it can be changed into a prime (1202202210151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54645554995 + ... + 54645555016.

It is an arithmetic number, because the mean of its divisors is an integer number (327873330036).

Almost surely, 2^{1202202210121} is an apocalyptic number.

1202202210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202202210121 is a deficient number, since it is larger than the sum of its proper divisors (109291110023).

1202202210121 is a wasteful number, since it uses less digits than its factorization.

1202202210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109291110022.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1202202210121 its reverse (1210122022021), we get a palindrome (2412324232142).

The spelling of 1202202210121 in words is "one trillion, two hundred two billion, two hundred two million, two hundred ten thousand, one hundred twenty-one".