1021203422042 has 8 divisors (see below), whose sum is σ = 1540659498516. Its totient is φ = 507650255872.

The previous prime is 1021203421991. The next prime is 1021203422053. The reversal of 1021203422042 is 2402243021201.

It can be written as a sum of positive squares in 2 ways, for example, as 1017796481881 + 3406940161 = 1008859^2 + 58369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1021203421999 and 1021203422017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1475727143 + ... + 1475727834.

Almost surely, 2^{1021203422042} is an apocalyptic number.

1021203422042 is a deficient number, since it is larger than the sum of its proper divisors (519456076474).

1021203422042 is a wasteful number, since it uses less digits than its factorization.

1021203422042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951455152.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1021203422042 its reverse (2402243021201), we get a palindrome (3423446443243).

The spelling of 1021203422042 in words is "one trillion, twenty-one billion, two hundred three million, four hundred twenty-two thousand, forty-two".