1020001222111 has 8 divisors (see below), whose sum is σ = 1023371585264. Its totient is φ = 1016631570240.

The previous prime is 1020001222069. The next prime is 1020001222117. The reversal of 1020001222111 is 1112221000201.

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 1020001222111 - 2⁷ = 1020001221983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020001222091 and 1020001222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020001222117) 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, 2775820 + ... + 3121726.

It is an arithmetic number, because the mean of its divisors is an integer number (127921448158).

Almost surely, 2^{1020001222111} is an apocalyptic number.

1020001222111 is a deficient number, since it is larger than the sum of its proper divisors (3370363153).

1020001222111 is an equidigital number, since it uses as much as digits as its factorization.

1020001222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355641.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020001222111 its reverse (1112221000201), we get a palindrome (2132222222312).

The spelling of 1020001222111 in words is "one trillion, twenty billion, one million, two hundred twenty-two thousand, one hundred eleven".