1021203511131 has 8 divisors (see below), whose sum is σ = 1361614703184. Its totient is φ = 680797329920.

The previous prime is 1021203511127. The next prime is 1021203511261. The reversal of 1021203511131 is 1311153021201.

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 1021203511131 - 2² = 1021203511127 is a prime.

It is a super-2 number, since 2×1021203511131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021203511098 and 1021203511107.

It is not an unprimeable number, because it can be changed into a prime (1021203511121) 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, 748146 + ... + 1613111.

It is an arithmetic number, because the mean of its divisors is an integer number (170201837898).

Almost surely, 2^{1021203511131} is an apocalyptic number.

1021203511131 is a deficient number, since it is larger than the sum of its proper divisors (340411192053).

1021203511131 is a wasteful number, since it uses less digits than its factorization.

1021203511131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505421.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 1021203511131 its reverse (1311153021201), we get a palindrome (2332356532332).

The spelling of 1021203511131 in words is "one trillion, twenty-one billion, two hundred three million, five hundred eleven thousand, one hundred thirty-one".