1201022011021 has 8 divisors (see below), whose sum is σ = 1406074549824. Its totient is φ = 1004338963680.

The previous prime is 1201022011009. The next prime is 1201022011031. The reversal of 1201022011021 is 1201102201021.

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 1201022011021 - 2⁷ = 1201022010893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201022010992 and 1201022011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201022011031) 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, 2092372555 + ... + 2092373128.

It is an arithmetic number, because the mean of its divisors is an integer number (175759318728).

Almost surely, 2^{1201022011021} is an apocalyptic number.

It is an amenable number.

1201022011021 is a deficient number, since it is larger than the sum of its proper divisors (205052538803).

1201022011021 is an equidigital number, since it uses as much as digits as its factorization.

1201022011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184745731.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201022011021 its reverse (1201102201021), we get a palindrome (2402124212042).

The spelling of 1201022011021 in words is "one trillion, two hundred one billion, twenty-two million, eleven thousand, twenty-one".