1210212021101 has 8 divisors (see below), whose sum is σ = 1242097759584. Its totient is φ = 1178496340560.

The previous prime is 1210212021071. The next prime is 1210212021143. The reversal of 1210212021101 is 1011202120121.

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 1210212021101 - 2³⁰ = 1209138279277 is a prime.

It is a super-2 number, since 2×1210212021101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212021401) 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, 42500066 + ... + 42528531.

It is an arithmetic number, because the mean of its divisors is an integer number (155262219948).

Almost surely, 2^{1210212021101} is an apocalyptic number.

It is an amenable number.

1210212021101 is a deficient number, since it is larger than the sum of its proper divisors (31885738483).

1210212021101 is an equidigital number, since it uses as much as digits as its factorization.

1210212021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85028971.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210212021101 its reverse (1011202120121), we get a palindrome (2221414141222).

The spelling of 1210212021101 in words is "one trillion, two hundred ten billion, two hundred twelve million, twenty-one thousand, one hundred one".