720001122102 has 40 divisors (see below), whose sum is σ = 1618123317096. Its totient is φ = 239288188608.

The previous prime is 720001122101. The next prime is 720001122103. The reversal of 720001122102 is 201221100027.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (720001122101) and next prime (720001122103).

It is a super-2 number, since 2×720001122102² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720001122101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6539548 + ... + 6648735.

Almost surely, 2^720001122102 is an apocalyptic number.

720001122102 is an abundant number, since it is smaller than the sum of its proper divisors (898122194994).

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

720001122102 is a wasteful number, since it uses less digits than its factorization.

720001122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13188634 (or 13188625 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

Adding to 720001122102 its reverse (201221100027), we get a palindrome (921222222129).

The spelling of 720001122102 in words is "seven hundred twenty billion, one million, one hundred twenty-two thousand, one hundred two".