1020012222121 has 8 divisors (see below), whose sum is σ = 1045354853088. Its totient is φ = 994691700000.

The previous prime is 1020012222113. The next prime is 1020012222127. The reversal of 1020012222121 is 1212222100201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1020012222121 - 2³ = 1020012222113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020012222095 and 1020012222104.

It is not an unprimeable number, because it can be changed into a prime (1020012222127) 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, 5433775 + ... + 5618356.

It is an arithmetic number, because the mean of its divisors is an integer number (130669356636).

Almost surely, 2^{1020012222121} is an apocalyptic number.

It is an amenable number.

1020012222121 is a deficient number, since it is larger than the sum of its proper divisors (25342630967).

1020012222121 is a wasteful number, since it uses less digits than its factorization.

1020012222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054423.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1020012222121 its reverse (1212222100201), we get a palindrome (2232234322322).

The spelling of 1020012222121 in words is "one trillion, twenty billion, twelve million, two hundred twenty-two thousand, one hundred twenty-one".