1220212011102 has 128 divisors (see below), whose sum is σ = 2909551518720. Its totient is φ = 333894113280.

The previous prime is 1220212011079. The next prime is 1220212011113. The reversal of 1220212011102 is 2011102120221.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 221010102 + ... + 221015622.

It is an arithmetic number, because the mean of its divisors is an integer number (22730871240).

Almost surely, 2^{1220212011102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220212011102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454775759360).

1220212011102 is an abundant number, since it is smaller than the sum of its proper divisors (1689339507618).

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

1220212011102 is a wasteful number, since it uses less digits than its factorization.

1220212011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7938.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220212011102 its reverse (2011102120221), we get a palindrome (3231314131323).

The spelling of 1220212011102 in words is "one trillion, two hundred twenty billion, two hundred twelve million, eleven thousand, one hundred two".