1021201211112 has 32 divisors (see below), whose sum is σ = 2635357966080. Its totient is φ = 329419745280.

The previous prime is 1021201211101. The next prime is 1021201211113. The reversal of 1021201211112 is 2111121021201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021201211091 and 1021201211100.

It is not an unprimeable number, because it can be changed into a prime (1021201211113) 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 7 ways as a sum of consecutive naturals, for example, 686290393 + ... + 686291880.

It is an arithmetic number, because the mean of its divisors is an integer number (82354936440).

Almost surely, 2^{1021201211112} is an apocalyptic number.

1021201211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021201211112 is an abundant number, since it is smaller than the sum of its proper divisors (1614156754968).

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

1021201211112 is a wasteful number, since it uses less digits than its factorization.

1021201211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372582313 (or 1372582309 counting only the distinct ones).

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

Adding to 1021201211112 its reverse (2111121021201), we get a palindrome (3132322232313).

It can be divided in two parts, 1021201 and 211112, that multiplied together give a palindrome (215587785512).

The spelling of 1021201211112 in words is "one trillion, twenty-one billion, two hundred one million, two hundred eleven thousand, one hundred twelve".