1131421055502 has 16 divisors (see below), whose sum is σ = 2324000006352. Its totient is φ = 366947369280.

The previous prime is 1131421055489. The next prime is 1131421055591. The reversal of 1131421055502 is 2055501241311.

It is a super-2 number, since 2×1131421055502² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131421055502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548245399 + ... + 2548245842.

It is an arithmetic number, because the mean of its divisors is an integer number (145250000397).

Almost surely, 2^{1131421055502} is an apocalyptic number.

1131421055502 is an abundant number, since it is smaller than the sum of its proper divisors (1192578950850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131421055502 is a wasteful number, since it uses less digits than its factorization.

1131421055502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096491283.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 1131421055502 its reverse (2055501241311), we get a palindrome (3186922296813).

The spelling of 1131421055502 in words is "one trillion, one hundred thirty-one billion, four hundred twenty-one million, fifty-five thousand, five hundred two".