1210011211021 has 8 divisors (see below), whose sum is σ = 1232001344288. Its totient is φ = 1188090558000.

The previous prime is 1210011211009. The next prime is 1210011211027. The reversal of 1210011211021 is 1201121100121.

It is a happy number.

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 1210011211021 - 2¹⁵ = 1210011178253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210011210992 and 1210011211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210011211027) 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, 17334915 + ... + 17404576.

It is an arithmetic number, because the mean of its divisors is an integer number (154000168036).

Almost surely, 2^{1210011211021} is an apocalyptic number.

It is an amenable number.

1210011211021 is a deficient number, since it is larger than the sum of its proper divisors (21990133267).

1210011211021 is an equidigital number, since it uses as much as digits as its factorization.

1210011211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34740123.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1210011211021 its reverse (1201121100121), we get a palindrome (2411132311142).

The spelling of 1210011211021 in words is "one trillion, two hundred ten billion, eleven million, two hundred eleven thousand, twenty-one".