20120201223020 has 24 divisors (see below), whose sum is σ = 42252507229968. Its totient is φ = 8048064363200.

The previous prime is 20120201223019. The next prime is 20120201223037. The reversal of 20120201223020 is 2032210202102.

It is a self number, because there is not a number n which added to its sum of digits gives 20120201223020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17623775 + ... + 18730665.

It is an arithmetic number, because the mean of its divisors is an integer number (1760521134582).

Almost surely, 2^{20120201223020} is an apocalyptic number.

20120201223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120201223020 is an abundant number, since it is smaller than the sum of its proper divisors (22132306006948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20120201223020 is a wasteful number, since it uses less digits than its factorization.

20120201223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015761 (or 2015759 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20120201223020 its reverse (2032210202102), we get a palindrome (22152411425122).

The spelling of 20120201223020 in words is "twenty trillion, one hundred twenty billion, two hundred one million, two hundred twenty-three thousand, twenty".