10012121111 has 8 divisors (see below), whose sum is σ = 10073540400. Its totient is φ = 9950866560.

The previous prime is 10012121069. The next prime is 10012121131. The reversal of 10012121111 is 11112121001.

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 10012121111 - 2¹⁴ = 10012104727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012121092 and 10012121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012121131) 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, 81860 + ... + 163478.

It is an arithmetic number, because the mean of its divisors is an integer number (1259192550).

Almost surely, 2^10012121111 is an apocalyptic number.

10012121111 is a deficient number, since it is larger than the sum of its proper divisors (61419289).

10012121111 is an equidigital number, since it uses as much as digits as its factorization.

10012121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82369.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10012121111 its reverse (11112121001), we get a palindrome (21124242112).

The spelling of 10012121111 in words is "ten billion, twelve million, one hundred twenty-one thousand, one hundred eleven".