20210222121210 has 64 divisors (see below), whose sum is σ = 58793373452160. Its totient is φ = 4899447786240.

The previous prime is 20210222121179. The next prime is 20210222121217. The reversal of 20210222121210 is 1212122201202.

It is a happy number.

20210222121210 is a `hidden beast` number, since 2 + 0 + 210 + 2 + 221 + 21 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20210222121217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3402391327 + ... + 3402397266.

It is an arithmetic number, because the mean of its divisors is an integer number (918646460190).

Almost surely, 2^{20210222121210} is an apocalyptic number.

20210222121210 is an abundant number, since it is smaller than the sum of its proper divisors (38583151330950).

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

20210222121210 is a wasteful number, since it uses less digits than its factorization.

20210222121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804788620 (or 6804788614 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20210222121210 its reverse (1212122201202), we get a palindrome (21422344322412).

The spelling of 20210222121210 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".