101220445049 has 2 divisors, whose sum is σ = 101220445050. Its totient is φ = 101220445048.

The previous prime is 101220444973. The next prime is 101220445087. The reversal of 101220445049 is 940544022101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100785931024 + 434514025 = 317468^2 + 20845^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220445049 - 2¹² = 101220440953 is a prime.

It is a super-2 number, since 2×101220445049² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101220445349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610222524 + 50610222525.

It is an arithmetic number, because the mean of its divisors is an integer number (50610222525).

Almost surely, 2^101220445049 is an apocalyptic number.

It is an amenable number.

101220445049 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220445049 is an equidigital number, since it uses as much as digits as its factorization.

101220445049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 101220445049 in words is "one hundred one billion, two hundred twenty million, four hundred forty-five thousand, forty-nine".