1201010021021 has 8 divisors (see below), whose sum is σ = 1202739436800. Its totient is φ = 1199280770640.

The previous prime is 1201010021017. The next prime is 1201010021039. The reversal of 1201010021021 is 1201200101021.

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 1201010021021 - 2² = 1201010021017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201010020993 and 1201010021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201010021011) 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, 27200000 + ... + 27244118.

It is an arithmetic number, because the mean of its divisors is an integer number (150342429600).

Almost surely, 2^{1201010021021} is an apocalyptic number.

It is an amenable number.

1201010021021 is a deficient number, since it is larger than the sum of its proper divisors (1729415779).

1201010021021 is an equidigital number, since it uses as much as digits as its factorization.

1201010021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82699.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201010021021 its reverse (1201200101021), we get a palindrome (2402210122042).

The spelling of 1201010021021 in words is "one trillion, two hundred one billion, ten million, twenty-one thousand, twenty-one".