1012011021211 has 4 divisors (see below), whose sum is σ = 1012351883400. Its totient is φ = 1011670159024.

The previous prime is 1012011021187. The next prime is 1012011021223. The reversal of 1012011021211 is 1121201102101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012011021211 - 2³⁷ = 874572067739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012011021191 and 1012011021200.

It is not an unprimeable number, because it can be changed into a prime (1012011021311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170426641 + ... + 170432578.

It is an arithmetic number, because the mean of its divisors is an integer number (253087970850).

Almost surely, 2^{1012011021211} is an apocalyptic number.

1012011021211 is a deficient number, since it is larger than the sum of its proper divisors (340862189).

1012011021211 is an equidigital number, since it uses as much as digits as its factorization.

1012011021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340862188.

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

Adding to 1012011021211 its reverse (1121201102101), we get a palindrome (2133212123312).

The spelling of 1012011021211 in words is "one trillion, twelve billion, eleven million, twenty-one thousand, two hundred eleven".