1210221010010 has 16 divisors (see below), whose sum is σ = 2231529472872. Its totient is φ = 472281369600.

The previous prime is 1210221009997. The next prime is 1210221010021. The reversal of 1210221010010 is 100101220121.

It can be written as a sum of positive squares in 4 ways, for example, as 944770392049 + 265450617961 = 971993^2 + 515219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1210221009973 and 1210221010000.

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, 1475878871 + ... + 1475879690.

Almost surely, 2^{1210221010010} is an apocalyptic number.

1210221010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210221010010 is a deficient number, since it is larger than the sum of its proper divisors (1021308462862).

1210221010010 is a wasteful number, since it uses less digits than its factorization.

1210221010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951758609.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210221010010 its reverse (100101220121), we get a palindrome (1310322230131).

The spelling of 1210221010010 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, ten thousand, ten".