10011211112121 has 8 divisors (see below), whose sum is σ = 13422852888480. Its totient is φ = 6636855038592.

The previous prime is 10011211112113. The next prime is 10011211112141. The reversal of 10011211112121 is 12121111211001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10011211112121 - 2³ = 10011211112113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10011211112121.

It is not an unprimeable number, because it can be changed into a prime (10011211112141) 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, 9321425080 + ... + 9321426153.

It is an arithmetic number, because the mean of its divisors is an integer number (1677856611060).

Almost surely, 2^{10011211112121} is an apocalyptic number.

It is an amenable number.

10011211112121 is a deficient number, since it is larger than the sum of its proper divisors (3411641776359).

10011211112121 is a wasteful number, since it uses less digits than its factorization.

10011211112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18642851415.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10011211112121 its reverse (12121111211001), we get a palindrome (22132322323122).

The spelling of 10011211112121 in words is "ten trillion, eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-one".