1131421202 has 4 divisors (see below), whose sum is σ = 1697131806. Its totient is φ = 565710600.

The previous prime is 1131421189. The next prime is 1131421217. The reversal of 1131421202 is 2021241311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2021241311 = 23 ⋅87880057.

It can be written as a sum of positive squares in only one way, i.e., 760049761 + 371371441 = 27569^2 + 19271^2 .

It is a super-2 number, since 2×1131421202² = 2560227872670249608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282855299 + ... + 282855302.

Almost surely, 2^1131421202 is an apocalyptic number.

1131421202 is a deficient number, since it is larger than the sum of its proper divisors (565710604).

1131421202 is an equidigital number, since it uses as much as digits as its factorization.

1131421202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565710603.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1131421202 is about 33636.6050902882. The cubic root of 1131421202 is about 1042.0169199154.

Adding to 1131421202 its reverse (2021241311), we get a palindrome (3152662513).

The spelling of 1131421202 in words is "one billion, one hundred thirty-one million, four hundred twenty-one thousand, two hundred two".