201220999996 has 24 divisors (see below), whose sum is σ = 354041660000. Its totient is φ = 100066627584.

The previous prime is 201220999981. The next prime is 201220999997. The reversal of 201220999996 is 699999022102.

It is a self number, because there is not a number n which added to its sum of digits gives 201220999996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220999997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093440 + ... + 2187448.

Almost surely, 2^201220999996 is an apocalyptic number.

It is an amenable number.

201220999996 is a deficient number, since it is larger than the sum of its proper divisors (152820660004).

201220999996 is a wasteful number, since it uses less digits than its factorization.

201220999996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96901 (or 96899 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 58.

It can be divided in two parts, 201220 and 999996, that added together give a square (1201216 = 1096²).

The spelling of 201220999996 in words is "two hundred one billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred ninety-six".