1022012121 has 24 divisors (see below), whose sum is σ = 1480455360. Its totient is φ = 626847936.

The previous prime is 1022012059. The next prime is 1022012129. The reversal of 1022012121 is 1212102201.

It is not a de Polignac number, because 1022012121 - 2¹⁰ = 1022011097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022012097 and 1022012106.

It is not an unprimeable number, because it can be changed into a prime (1022012129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157540 + ... + 163898.

It is an arithmetic number, because the mean of its divisors is an integer number (61685640).

Almost surely, 2^1022012121 is an apocalyptic number.

It is an amenable number.

1022012121 is a deficient number, since it is larger than the sum of its proper divisors (458443239).

1022012121 is a wasteful number, since it uses less digits than its factorization.

1022012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1022012121 is about 31968.9243015776. The cubic root of 1022012121 is about 1007.2841854772.

Adding to 1022012121 its reverse (1212102201), we get a palindrome (2234114322).

The spelling of 1022012121 in words is "one billion, twenty-two million, twelve thousand, one hundred twenty-one".