1001212021011 has 16 divisors (see below), whose sum is σ = 1336062325248. Its totient is φ = 666918336000.

The previous prime is 1001212021009. The next prime is 1001212021063. The reversal of 1001212021011 is 1101202121001.

It is not a de Polignac number, because 1001212021011 - 2¹ = 1001212021009 is a prime.

It is a super-2 number, since 2×1001212021011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001212021001) 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, 44054131 + ... + 44076851.

It is an arithmetic number, because the mean of its divisors is an integer number (83503895328).

Almost surely, 2^{1001212021011} is an apocalyptic number.

1001212021011 is a deficient number, since it is larger than the sum of its proper divisors (334850304237).

1001212021011 is a wasteful number, since it uses less digits than its factorization.

1001212021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34322.

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

Adding to 1001212021011 its reverse (1101202121001), we get a palindrome (2102414142012).

The spelling of 1001212021011 in words is "one trillion, one billion, two hundred twelve million, twenty-one thousand, eleven".