4202331901721 has 2 divisors, whose sum is σ = 4202331901722. Its totient is φ = 4202331901720.

The previous prime is 4202331901633. The next prime is 4202331901727. The reversal of 4202331901721 is 1271091332024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3519826254400 + 682505647321 = 1876120^2 + 826139^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202331901721 - 2¹⁴ = 4202331885337 is a prime.

It is not a weakly prime, because it can be changed into another prime (4202331901727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2101165950860 + 2101165950861.

It is an arithmetic number, because the mean of its divisors is an integer number (2101165950861).

Almost surely, 2^{4202331901721} is an apocalyptic number.

It is an amenable number.

4202331901721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4202331901721 is an equidigital number, since it uses as much as digits as its factorization.

4202331901721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 4202331901721 in words is "four trillion, two hundred two billion, three hundred thirty-one million, nine hundred one thousand, seven hundred twenty-one".