1000122112210 has 32 divisors (see below), whose sum is σ = 1941667323120. Its totient is φ = 368710318848.

The previous prime is 1000122112133. The next prime is 1000122112237. The reversal of 1000122112210 is 122112210001.

It can be written as a sum of positive squares in 8 ways, for example, as 146510576289 + 853611535921 = 382767^2 + 923911^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5805805 + ... + 5975584.

Almost surely, 2^{1000122112210} is an apocalyptic number.

1000122112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000122112210 is a deficient number, since it is larger than the sum of its proper divisors (941545210910).

1000122112210 is a wasteful number, since it uses less digits than its factorization.

1000122112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11782062.

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

Adding to 1000122112210 its reverse (122112210001), we get a palindrome (1122234322211).

The spelling of 1000122112210 in words is "one trillion, one hundred twenty-two million, one hundred twelve thousand, two hundred ten".