2001022133242 has 24 divisors (see below), whose sum is σ = 3320220027348. Its totient is φ = 903762150720.

The previous prime is 2001022133207. The next prime is 2001022133261. The reversal of 2001022133242 is 2423312201002.

It can be written as a sum of positive squares in 2 ways, for example, as 1858426024081 + 142596109161 = 1363241^2 + 377619^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26295403 + ... + 26371390.

Almost surely, 2^{2001022133242} is an apocalyptic number.

2001022133242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001022133242 is a deficient number, since it is larger than the sum of its proper divisors (1319197894106).

2001022133242 is a wasteful number, since it uses less digits than its factorization.

2001022133242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52666974 (or 52666963 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2001022133242 its reverse (2423312201002), we get a palindrome (4424334334244).

The spelling of 2001022133242 in words is "two trillion, one billion, twenty-two million, one hundred thirty-three thousand, two hundred forty-two".