2142120220212 has 72 divisors (see below), whose sum is σ = 5816414009280. Its totient is φ = 611814591360.

The previous prime is 2142120220193. The next prime is 2142120220213. The reversal of 2142120220212 is 2120220212412.

It is a super-2 number, since 2×2142120220212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142120220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 988464 + ... + 2293752.

Almost surely, 2^{2142120220212} is an apocalyptic number.

It is an amenable number.

2142120220212 is an abundant number, since it is smaller than the sum of its proper divisors (3674293789068).

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

2142120220212 is a wasteful number, since it uses less digits than its factorization.

2142120220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308101 (or 1308092 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2142120220212 its reverse (2120220212412), we get a palindrome (4262340432624).

The spelling of 2142120220212 in words is "two trillion, one hundred forty-two billion, one hundred twenty million, two hundred twenty thousand, two hundred twelve".