1201110021021 has 8 divisors (see below), whose sum is σ = 1671109594560. Its totient is φ = 765925230752.

The previous prime is 1201110020969. The next prime is 1201110021073. The reversal of 1201110021021 is 1201200111021.

It is an interprime number because it is at equal distance from previous prime (1201110020969) and next prime (1201110021073).

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 1201110021021 - 2¹⁴ = 1201110004637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201110020988 and 1201110021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201110021821) 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, 8703695736 + ... + 8703695873.

It is an arithmetic number, because the mean of its divisors is an integer number (208888699320).

Almost surely, 2^{1201110021021} is an apocalyptic number.

It is an amenable number.

1201110021021 is a deficient number, since it is larger than the sum of its proper divisors (469999573539).

1201110021021 is a wasteful number, since it uses less digits than its factorization.

1201110021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17407391635.

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

Adding to 1201110021021 its reverse (1201200111021), we get a palindrome (2402310132042).

The spelling of 1201110021021 in words is "one trillion, two hundred one billion, one hundred ten million, twenty-one thousand, twenty-one".