1202021111112 has 32 divisors (see below), whose sum is σ = 3101989966080. Its totient is φ = 387748745280.

The previous prime is 1202021111069. The next prime is 1202021111113. The reversal of 1202021111112 is 2111111202021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1202021111091 and 1202021111100.

It is not an unprimeable number, because it can be changed into a prime (1202021111113) 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 in 7 ways as a sum of consecutive naturals, for example, 807809143 + ... + 807810630.

It is an arithmetic number, because the mean of its divisors is an integer number (96937186440).

Almost surely, 2^{1202021111112} is an apocalyptic number.

1202021111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1202021111112 is an abundant number, since it is smaller than the sum of its proper divisors (1899968854968).

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

1202021111112 is a wasteful number, since it uses less digits than its factorization.

1202021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615619813 (or 1615619809 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1202021111112 its reverse (2111111202021), we get a palindrome (3313132313133).

Subtracting 1202021111112 from its reverse (2111111202021), we obtain a palindrome (909090090909).

The spelling of 1202021111112 in words is "one trillion, two hundred two billion, twenty-one million, one hundred eleven thousand, one hundred twelve".