1131202120021 has 8 divisors (see below), whose sum is σ = 1162563781280. Its totient is φ = 1100070214992.

The previous prime is 1131202119973. The next prime is 1131202120159. The reversal of 1131202120021 is 1200212021311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131202120021 - 2⁷ = 1131202119893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131202119977 and 1131202120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131202150021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57429075 + ... + 57448768.

It is an arithmetic number, because the mean of its divisors is an integer number (145320472660).

Almost surely, 2^{1131202120021} is an apocalyptic number.

It is an amenable number.

1131202120021 is a deficient number, since it is larger than the sum of its proper divisors (31361661259).

1131202120021 is a wasteful number, since it uses less digits than its factorization.

1131202120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114878115.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1131202120021 its reverse (1200212021311), we get a palindrome (2331414141332).

The spelling of 1131202120021 in words is "one trillion, one hundred thirty-one billion, two hundred two million, one hundred twenty thousand, twenty-one".