221020121200210 has 64 divisors (see below), whose sum is σ = 402329001916800. Its totient is φ = 87415119171072.

The previous prime is 221020121200171. The next prime is 221020121200237. The reversal of 221020121200210 is 12002121020122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 848090806 + ... + 848351374.

It is an arithmetic number, because the mean of its divisors is an integer number (6286390654950).

Almost surely, 2^{221020121200210} is an apocalyptic number.

221020121200210 is a deficient number, since it is larger than the sum of its proper divisors (181308880716590).

221020121200210 is a wasteful number, since it uses less digits than its factorization.

221020121200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263195.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221020121200210 its reverse (12002121020122), we get a palindrome (233022242220332).

The spelling of 221020121200210 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty-one million, two hundred thousand, two hundred ten".