1012120221211 has 8 divisors (see below), whose sum is σ = 1104138989424. Its totient is φ = 920102759520.

The previous prime is 1012120221197. The next prime is 1012120221227. The reversal of 1012120221211 is 1121220212101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012120221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012120224211) 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, 2036545 + ... + 2484301.

It is an arithmetic number, because the mean of its divisors is an integer number (138017373678).

Almost surely, 2^{1012120221211} is an apocalyptic number.

1012120221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012120221211 is a deficient number, since it is larger than the sum of its proper divisors (92018768213).

1012120221211 is a wasteful number, since it uses less digits than its factorization.

1012120221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653261.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012120221211 its reverse (1121220212101), we get a palindrome (2133340433312).

The spelling of 1012120221211 in words is "one trillion, twelve billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".