1202022020121 has 32 divisors (see below), whose sum is σ = 1758874182912. Its totient is φ = 725613707520.

The previous prime is 1202022020099. The next prime is 1202022020201. The reversal of 1202022020121 is 1210202202021.

It is not a de Polignac number, because 1202022020121 - 2¹⁸ = 1202021757977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202022020121.

It is not an unprimeable number, because it can be changed into a prime (1202022020021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11633316 + ... + 11736186.

It is an arithmetic number, because the mean of its divisors is an integer number (54964818216).

Almost surely, 2^{1202022020121} is an apocalyptic number.

It is an amenable number.

1202022020121 is a deficient number, since it is larger than the sum of its proper divisors (556852162791).

1202022020121 is a wasteful number, since it uses less digits than its factorization.

1202022020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108593.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1202022020121 its reverse (1210202202021), we get a palindrome (2412224222142).

The spelling of 1202022020121 in words is "one trillion, two hundred two billion, twenty-two million, twenty thousand, one hundred twenty-one".