1011220012121 has 8 divisors (see below), whose sum is σ = 1138734559488. Its totient is φ = 889636374000.

The previous prime is 1011220012111. The next prime is 1011220012207. The reversal of 1011220012121 is 1212100221101.

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

It is not a de Polignac number, because 1011220012121 - 2¹⁸ = 1011219749977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011220012096 and 1011220012105.

It is not an unprimeable number, because it can be changed into a prime (1011220012111) 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, 1482726950 + ... + 1482727631.

It is an arithmetic number, because the mean of its divisors is an integer number (142341819936).

Almost surely, 2^{1011220012121} is an apocalyptic number.

1011220012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011220012121 is a deficient number, since it is larger than the sum of its proper divisors (127514547367).

1011220012121 is a wasteful number, since it uses less digits than its factorization.

1011220012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965454623.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011220012121 its reverse (1212100221101), we get a palindrome (2223320233222).

The spelling of 1011220012121 in words is "one trillion, eleven billion, two hundred twenty million, twelve thousand, one hundred twenty-one".