1011002012121 has 16 divisors (see below), whose sum is σ = 1394562672000. Its totient is φ = 650723918208.

The previous prime is 1011002012107. The next prime is 1011002012131. The reversal of 1011002012121 is 1212102001101.

It is not a de Polignac number, because 1011002012121 - 2⁷ = 1011002011993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011002012097 and 1011002012106.

It is not an unprimeable number, because it can be changed into a prime (1011002012131) 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, 1307580 + ... + 1931778.

It is an arithmetic number, because the mean of its divisors is an integer number (87160167000).

Almost surely, 2^{1011002012121} is an apocalyptic number.

It is an amenable number.

1011002012121 is a deficient number, since it is larger than the sum of its proper divisors (383560659879).

1011002012121 is a wasteful number, since it uses less digits than its factorization.

1011002012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642848.

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

Adding to 1011002012121 its reverse (1212102001101), we get a palindrome (2223104013222).

The spelling of 1011002012121 in words is "one trillion, eleven billion, two million, twelve thousand, one hundred twenty-one".