1011869921442 has 16 divisors (see below), whose sum is σ = 2035858047552. Its totient is φ = 335270273040.

The previous prime is 1011869921441. The next prime is 1011869921443. The reversal of 1011869921442 is 2441299681101.

It is an interprime number because it is at equal distance from previous prime (1011869921441) and next prime (1011869921443).

It is a junction number, because it is equal to n+sod(n) for n = 1011869921391 and 1011869921400.

It is not an unprimeable number, because it can be changed into a prime (1011869921441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504924109 + ... + 504926112.

It is an arithmetic number, because the mean of its divisors is an integer number (127241127972).

Almost surely, 2^{1011869921442} is an apocalyptic number.

1011869921442 is an abundant number, since it is smaller than the sum of its proper divisors (1023988126110).

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

1011869921442 is a wasteful number, since it uses less digits than its factorization.

1011869921442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009850393.

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 1011869921442 in words is "one trillion, eleven billion, eight hundred sixty-nine million, nine hundred twenty-one thousand, four hundred forty-two".