2121031313133 has 8 divisors (see below), whose sum is σ = 2976886053600. Its totient is φ = 1339598724048.

The previous prime is 2121031313129. The next prime is 2121031313143. The reversal of 2121031313133 is 3313131301212.

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

It is not a de Polignac number, because 2121031313133 - 2² = 2121031313129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121031313143) 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, 18605537778 + ... + 18605537891.

It is an arithmetic number, because the mean of its divisors is an integer number (372110756700).

Almost surely, 2^{2121031313133} is an apocalyptic number.

It is an amenable number.

2121031313133 is a deficient number, since it is larger than the sum of its proper divisors (855854740467).

2121031313133 is a wasteful number, since it uses less digits than its factorization.

2121031313133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37211075691.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 2121031313133 its reverse (3313131301212), we get a palindrome (5434162614345).

The spelling of 2121031313133 in words is "two trillion, one hundred twenty-one billion, thirty-one million, three hundred thirteen thousand, one hundred thirty-three".