1011202022121 has 16 divisors (see below), whose sum is σ = 1419259472640. Its totient is φ = 638641054800.

The previous prime is 1011202022111. The next prime is 1011202022123. The reversal of 1011202022121 is 1212202021101.

It is not a de Polignac number, because 1011202022121 - 2¹⁰ = 1011202021097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011202022121.

It is not an unprimeable number, because it can be changed into a prime (1011202022123) 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, 3251406 + ... + 3548808.

It is an arithmetic number, because the mean of its divisors is an integer number (88703717040).

Almost surely, 2^{1011202022121} is an apocalyptic number.

It is an amenable number.

1011202022121 is a deficient number, since it is larger than the sum of its proper divisors (408057450519).

1011202022121 is a wasteful number, since it uses less digits than its factorization.

1011202022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357076.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011202022121 its reverse (1212202021101), we get a palindrome (2223404043222).

The spelling of 1011202022121 in words is "one trillion, eleven billion, two hundred two million, twenty-two thousand, one hundred twenty-one".