1102202020121 has 4 divisors (see below), whose sum is σ = 1102213429044. Its totient is φ = 1102190611200.

The previous prime is 1102202020093. The next prime is 1102202020123. The reversal of 1102202020121 is 1210202022011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 610890744025 + 491311276096 = 781595^2 + 700936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102202020121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102202020096 and 1102202020105.

It is not an unprimeable number, because it can be changed into a prime (1102202020123) 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, 5558300 + ... + 5753181.

It is an arithmetic number, because the mean of its divisors is an integer number (275553357261).

Almost surely, 2^{1102202020121} is an apocalyptic number.

It is an amenable number.

1102202020121 is a deficient number, since it is larger than the sum of its proper divisors (11408923).

1102202020121 is an equidigital number, since it uses as much as digits as its factorization.

1102202020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1102202020121 its reverse (1210202022011), we get a palindrome (2312404042132).

The spelling of 1102202020121 in words is "one trillion, one hundred two billion, two hundred two million, twenty thousand, one hundred twenty-one".