101220043 has 2 divisors, whose sum is σ = 101220044. Its totient is φ = 101220042.

The previous prime is 101220037. The next prime is 101220059. The reversal of 101220043 is 340022101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220043 is a prime.

It is not a weakly prime, because it can be changed into another prime (101220013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610021 + 50610022.

It is an arithmetic number, because the mean of its divisors is an integer number (50610022).

Almost surely, 2^101220043 is an apocalyptic number.

101220043 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220043 is an equidigital number, since it uses as much as digits as its factorization.

101220043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 101220043 is about 10060.8172133281. The cubic root of 101220043 is about 466.0389042655.

Adding to 101220043 its reverse (340022101), we get a palindrome (441242144).

The spelling of 101220043 in words is "one hundred one million, two hundred twenty thousand, forty-three".