20022001221210 has 32 divisors (see below), whose sum is σ = 48301781198400. Its totient is φ = 5311536073728.

The previous prime is 20022001221139. The next prime is 20022001221269. The reversal of 20022001221210 is 1212210022002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20022001221210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729009860 + ... + 1729021439.

It is an arithmetic number, because the mean of its divisors is an integer number (1509430662450).

Almost surely, 2^{20022001221210} is an apocalyptic number.

20022001221210 is an abundant number, since it is smaller than the sum of its proper divisors (28279779977190).

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

20022001221210 is a wasteful number, since it uses less digits than its factorization.

20022001221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458031502.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20022001221210 its reverse (1212210022002), we get a palindrome (21234211243212).

The spelling of 20022001221210 in words is "twenty trillion, twenty-two billion, one million, two hundred twenty-one thousand, two hundred ten".