101210221019 has 2 divisors, whose sum is σ = 101210221020. Its totient is φ = 101210221018.

The previous prime is 101210220941. The next prime is 101210221111. The reversal of 101210221019 is 910122012101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101210221019 - 2³² = 96915253723 is a prime.

It is a super-2 number, since 2×101210221019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101210223019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605110509 + 50605110510.

It is an arithmetic number, because the mean of its divisors is an integer number (50605110510).

Almost surely, 2^101210221019 is an apocalyptic number.

101210221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210221019 is an equidigital number, since it uses as much as digits as its factorization.

101210221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 101210221019 in words is "one hundred one billion, two hundred ten million, two hundred twenty-one thousand, nineteen".