1021121310442 has 16 divisors (see below), whose sum is σ = 1548567155520. Its totient is φ = 504960191712.

The previous prime is 1021121310413. The next prime is 1021121310467. The reversal of 1021121310442 is 2440131211201.

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, 6909963 + ... + 7056190.

It is an arithmetic number, because the mean of its divisors is an integer number (96785447220).

Almost surely, 2^{1021121310442} is an apocalyptic number.

1021121310442 is a deficient number, since it is larger than the sum of its proper divisors (527445845078).

1021121310442 is a wasteful number, since it uses less digits than its factorization.

1021121310442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13966557.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1021121310442 its reverse (2440131211201), we get a palindrome (3461252521643).

The spelling of 1021121310442 in words is "one trillion, twenty-one billion, one hundred twenty-one million, three hundred ten thousand, four hundred forty-two".