201220100169 has 32 divisors (see below), whose sum is σ = 301193164800. Its totient is φ = 118445620800.

The previous prime is 201220100167. The next prime is 201220100201. The reversal of 201220100169 is 961001022102.

It is not a de Polignac number, because 201220100169 - 2¹ = 201220100167 is a prime.

It is a super-2 number, since 2×201220100169² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201220100167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291994 + ... + 698355.

It is an arithmetic number, because the mean of its divisors is an integer number (9412286400).

Almost surely, 2^201220100169 is an apocalyptic number.

It is an amenable number.

201220100169 is a deficient number, since it is larger than the sum of its proper divisors (99973064631).

201220100169 is a wasteful number, since it uses less digits than its factorization.

201220100169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990541.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 201220100169 in words is "two hundred one billion, two hundred twenty million, one hundred thousand, one hundred sixty-nine".