1021121200011 has 8 divisors (see below), whose sum is σ = 1485267200064. Its totient is φ = 618861333320.

The previous prime is 1021121199941. The next prime is 1021121200097. The reversal of 1021121200011 is 1100021211201.

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 1021121200011 - 2⁷ = 1021121199883 is a prime.

It is a super-2 number, since 2×1021121200011² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021121200011.

It is not an unprimeable number, because it can be changed into a prime (1021121200811) 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, 15471533301 + ... + 15471533366.

It is an arithmetic number, because the mean of its divisors is an integer number (185658400008).

Almost surely, 2^{1021121200011} is an apocalyptic number.

1021121200011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021121200011 is a deficient number, since it is larger than the sum of its proper divisors (464146000053).

1021121200011 is a wasteful number, since it uses less digits than its factorization.

1021121200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30943066681.

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

Adding to 1021121200011 its reverse (1100021211201), we get a palindrome (2121142411212).

The spelling of 1021121200011 in words is "one trillion, twenty-one billion, one hundred twenty-one million, two hundred thousand, eleven".