1202222021121 has 16 divisors (see below), whose sum is σ = 1942985085120. Its totient is φ = 728619406560.

The previous prime is 1202222021107. The next prime is 1202222021131. The reversal of 1202222021121 is 1211202222021.

It is a happy number.

1202222021121 is a `hidden beast` number, since 120 + 222 + 202 + 1 + 121 = 666.

It is not a de Polignac number, because 1202222021121 - 2⁹ = 1202222020609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202222021094 and 1202222021103.

It is not an unprimeable number, because it can be changed into a prime (1202222021101) 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, 2023942500 + ... + 2023943093.

It is an arithmetic number, because the mean of its divisors is an integer number (121436567820).

Almost surely, 2^{1202222021121} is an apocalyptic number.

1202222021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202222021121 is a deficient number, since it is larger than the sum of its proper divisors (740763063999).

1202222021121 is a wasteful number, since it uses less digits than its factorization.

1202222021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047885613 (or 4047885607 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1202222021121 its reverse (1211202222021), we get a palindrome (2413424243142).

It can be divided in two parts, 1202222021 and 121, that multiplied together give a palindrome (145468864541).

The spelling of 1202222021121 in words is "one trillion, two hundred two billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-one".