1210210220021 has 8 divisors (see below), whose sum is σ = 1320383612064. Its totient is φ = 1100062541520.

The previous prime is 1210210219987. The next prime is 1210210220027. The reversal of 1210210220021 is 1200220120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210210220021 - 2²⁶ = 1210143111157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210210219978 and 1210210220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210210220027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6329906 + ... + 6518291.

It is an arithmetic number, because the mean of its divisors is an integer number (165047951508).

Almost surely, 2^{1210210220021} is an apocalyptic number.

1210210220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210210220021 is a deficient number, since it is larger than the sum of its proper divisors (110173392043).

1210210220021 is a wasteful number, since it uses less digits than its factorization.

1210210220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856771.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1210210220021 its reverse (1200220120121), we get a palindrome (2410430340142).

The spelling of 1210210220021 in words is "one trillion, two hundred ten billion, two hundred ten million, two hundred twenty thousand, twenty-one".