1212101001021 has 8 divisors (see below), whose sum is σ = 1668268044544. Its totient is φ = 782000645760.

The previous prime is 1212101000969. The next prime is 1212101001043. The reversal of 1212101001021 is 1201001012121.

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

It is not a de Polignac number, because 1212101001021 - 2²² = 1212096806717 is a prime.

It is a super-2 number, since 2×1212101001021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212101000988 and 1212101001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212101001061) 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, 6516671956 + ... + 6516672141.

It is an arithmetic number, because the mean of its divisors is an integer number (208533505568).

Almost surely, 2^{1212101001021} is an apocalyptic number.

It is an amenable number.

1212101001021 is a deficient number, since it is larger than the sum of its proper divisors (456167043523).

1212101001021 is a wasteful number, since it uses less digits than its factorization.

1212101001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033344131.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212101001021 its reverse (1201001012121), we get a palindrome (2413102013142).

The spelling of 1212101001021 in words is "one trillion, two hundred twelve billion, one hundred one million, one thousand, twenty-one".