10011211121021 has 8 divisors (see below), whose sum is σ = 10964832465888. Its totient is φ = 9064841650000.

The previous prime is 10011211121003. The next prime is 10011211121069. The reversal of 10011211121021 is 12012111211001.

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-10011211121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011211120987 and 10011211121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011211141021) 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, 1812965570 + ... + 1812971091.

It is an arithmetic number, because the mean of its divisors is an integer number (1370604058236).

Almost surely, 2^{10011211121021} is an apocalyptic number.

10011211121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011211121021 is a deficient number, since it is larger than the sum of its proper divisors (953621344867).

10011211121021 is a wasteful number, since it uses less digits than its factorization.

10011211121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625936923.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10011211121021 its reverse (12012111211001), we get a palindrome (22023322332022).

The spelling of 10011211121021 in words is "ten trillion, eleven billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".