101011200442 has 4 divisors (see below), whose sum is σ = 151516800666. Its totient is φ = 50505600220.

The previous prime is 101011200439. The next prime is 101011200443. The reversal of 101011200442 is 244002110101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244002110101 = 3583 ⋅68099947.

It can be written as a sum of positive squares in only one way, i.e., 88126453321 + 12884747121 = 296861^2 + 113511^2 .

It is a super-2 number, since 2×101011200442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101011200443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25252800109 + ... + 25252800112.

Almost surely, 2^101011200442 is an apocalyptic number.

101011200442 is a deficient number, since it is larger than the sum of its proper divisors (50505600224).

101011200442 is an equidigital number, since it uses as much as digits as its factorization.

101011200442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50505600223.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101011200442 its reverse (244002110101), we get a palindrome (345013310543).

The spelling of 101011200442 in words is "one hundred one billion, eleven million, two hundred thousand, four hundred forty-two".