1121521202442 has 12 divisors (see below), whose sum is σ = 2429962605330. Its totient is φ = 373840400808.

The previous prime is 1121521202377. The next prime is 1121521202467. The reversal of 1121521202442 is 2442021251211.

1121521202442 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 5 + 212 + 0 + 2 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 928368863361 + 193152339081 = 963519^2 + 439491^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31153366717 + ... + 31153366752.

Almost surely, 2^{1121521202442} is an apocalyptic number.

1121521202442 is an abundant number, since it is smaller than the sum of its proper divisors (1308441402888).

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

1121521202442 is a wasteful number, since it uses less digits than its factorization.

1121521202442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62306733477 (or 62306733474 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 1121521202442 its reverse (2442021251211), we get a palindrome (3563542453653).

The spelling of 1121521202442 in words is "one trillion, one hundred twenty-one billion, five hundred twenty-one million, two hundred two thousand, four hundred forty-two".