1000011210121 has 16 divisors (see below), whose sum is σ = 1251268214400. Its totient is φ = 776416394880.

The previous prime is 1000011210113. The next prime is 1000011210181. The reversal of 1000011210121 is 1210121100001.

It is not a de Polignac number, because 1000011210121 - 2³ = 1000011210113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000011210098 and 1000011210107.

It is not an unprimeable number, because it can be changed into a prime (1000011210181) 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, 23421196 + ... + 23463853.

It is an arithmetic number, because the mean of its divisors is an integer number (78204263400).

Almost surely, 2^{1000011210121} is an apocalyptic number.

1000011210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000011210121 is a deficient number, since it is larger than the sum of its proper divisors (251257004279).

1000011210121 is a wasteful number, since it uses less digits than its factorization.

1000011210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46885344.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000011210121 its reverse (1210121100001), we get a palindrome (2210132310122).

It can be divided in two parts, 100001 and 1210121, that multiplied together give a palindrome (121013310121).

The spelling of 1000011210121 in words is "one trillion, eleven million, two hundred ten thousand, one hundred twenty-one".