1011211022001 has 16 divisors (see below), whose sum is σ = 1370008200960. Its totient is φ = 663335512320.

The previous prime is 1011211021999. The next prime is 1011211022057. The reversal of 1011211022001 is 1002201121101.

It is not a de Polignac number, because 1011211022001 - 2¹ = 1011211021999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011211022201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7211640 + ... + 7350521.

It is an arithmetic number, because the mean of its divisors is an integer number (85625512560).

Almost surely, 2^{1011211022001} is an apocalyptic number.

It is an amenable number.

1011211022001 is a deficient number, since it is larger than the sum of its proper divisors (358797178959).

1011211022001 is a wasteful number, since it uses less digits than its factorization.

1011211022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14562536.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011211022001 its reverse (1002201121101), we get a palindrome (2013412143102).

The spelling of 1011211022001 in words is "one trillion, eleven billion, two hundred eleven million, twenty-two thousand, one".