101223021043 has 4 divisors (see below), whose sum is σ = 101266262608. Its totient is φ = 101179779480.

The previous prime is 101223021023. The next prime is 101223021059. The reversal of 101223021043 is 340120322101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101223021043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101223021043.

It is not an unprimeable number, because it can be changed into a prime (101223021023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21617271 + ... + 21621952.

It is an arithmetic number, because the mean of its divisors is an integer number (25316565652).

Almost surely, 2^101223021043 is an apocalyptic number.

101223021043 is a deficient number, since it is larger than the sum of its proper divisors (43241565).

101223021043 is an equidigital number, since it uses as much as digits as its factorization.

101223021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43241564.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 101223021043 its reverse (340120322101), we get a palindrome (441343343144).

The spelling of 101223021043 in words is "one hundred one billion, two hundred twenty-three million, twenty-one thousand, forty-three".