210121020001222 has 48 divisors (see below), whose sum is σ = 353869263982080. Its totient is φ = 93461844556080.

The previous prime is 210121020001141. The next prime is 210121020001247. The reversal of 210121020001222 is 222100020121012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210121020001196 and 210121020001205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66785929 + ... + 69861307.

It is an arithmetic number, because the mean of its divisors is an integer number (7372276332960).

Almost surely, 2^{210121020001222} is an apocalyptic number.

210121020001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210121020001222 is a deficient number, since it is larger than the sum of its proper divisors (143748243980858).

210121020001222 is a wasteful number, since it uses less digits than its factorization.

210121020001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081457 (or 3081446 counting only the distinct ones).

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

Adding to 210121020001222 its reverse (222100020121012), we get a palindrome (432221040122234).

The spelling of 210121020001222 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty million, one thousand, two hundred twenty-two".