1210202021109 has 8 divisors (see below), whose sum is σ = 1613610017440. Its totient is φ = 806797686096.

The previous prime is 1210202021089. The next prime is 1210202021143. The reversal of 1210202021109 is 9011202020121.

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

It is not a de Polignac number, because 1210202021109 - 2²⁷ = 1210067803381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210202021309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18562 + ... + 1555875.

It is an arithmetic number, because the mean of its divisors is an integer number (201701252180).

Almost surely, 2^{1210202021109} is an apocalyptic number.

It is an amenable number.

1210202021109 is a deficient number, since it is larger than the sum of its proper divisors (403407996331).

1210202021109 is a wasteful number, since it uses less digits than its factorization.

1210202021109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830659.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 1210202021109 in words is "one trillion, two hundred ten billion, two hundred two million, twenty-one thousand, one hundred nine".