210220121211212 has 24 divisors (see below), whose sum is σ = 420441634260480. Its totient is φ = 90094039410960.

The previous prime is 210220121211167. The next prime is 210220121211229. The reversal of 210220121211212 is 212112121022012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3710714 + ... + 20837697.

It is an arithmetic number, because the mean of its divisors is an integer number (17518401427520).

Almost surely, 2^{210220121211212} is an apocalyptic number.

It is an amenable number.

210220121211212 is an abundant number, since it is smaller than the sum of its proper divisors (210221513049268).

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

210220121211212 is a wasteful number, since it uses less digits than its factorization.

210220121211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24854261 (or 24854259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210220121211212 its reverse (212112121022012), we get a palindrome (422332242233224).

The spelling of 210220121211212 in words is "two hundred ten trillion, two hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".