101220313021001 has 2 divisors, whose sum is σ = 101220313021002. Its totient is φ = 101220313021000.

The previous prime is 101220313020997. The next prime is 101220313021027. The reversal of 101220313021001 is 100120313022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90924711348025 + 10295601672976 = 9535445^2 + 3208676^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220313021001 - 2² = 101220313020997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101220313521001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610156510500 + 50610156510501.

It is an arithmetic number, because the mean of its divisors is an integer number (50610156510501).

Almost surely, 2^{101220313021001} is an apocalyptic number.

It is an amenable number.

101220313021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220313021001 is an equidigital number, since it uses as much as digits as its factorization.

101220313021001 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 17.

Adding to 101220313021001 its reverse (100120313022101), we get a palindrome (201340626043102).

The spelling of 101220313021001 in words is "one hundred one trillion, two hundred twenty billion, three hundred thirteen million, twenty-one thousand, one".