12012221020090 has 32 divisors (see below), whose sum is σ = 22150912568400. Its totient is φ = 4687368192000.

The previous prime is 12012221020081. The next prime is 12012221020091. The reversal of 12012221020090 is 9002012221021.

It can be written as a sum of positive squares in 8 ways, for example, as 4370905230241 + 7641315789849 = 2090671^2 + 2764293^2 .

It is not an unprimeable number, because it can be changed into a prime (12012221020091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4887186 + ... + 6921634.

Almost surely, 2^{12012221020090} is an apocalyptic number.

12012221020090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012221020090 is a deficient number, since it is larger than the sum of its proper divisors (10138691548310).

12012221020090 is a wasteful number, since it uses less digits than its factorization.

12012221020090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048898.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12012221020090 in words is "twelve trillion, twelve billion, two hundred twenty-one million, twenty thousand, ninety".