122101011 has 24 divisors (see below), whose sum is σ = 186360720. Its totient is φ = 76821696.

The previous prime is 122101009. The next prime is 122101013. The reversal of 122101011 is 110101221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122101009) and next prime (122101013).

It is not a de Polignac number, because 122101011 - 2¹ = 122101009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 122100984 and 122101002.

It is not an unprimeable number, because it can be changed into a prime (122101013) 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, 48885 + ... + 51321.

It is an arithmetic number, because the mean of its divisors is an integer number (7765030).

Almost surely, 2^122101011 is an apocalyptic number.

122101011 is a deficient number, since it is larger than the sum of its proper divisors (64259709).

122101011 is a wasteful number, since it uses less digits than its factorization.

122101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2752 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 122101011 is about 11049.9326242290. The cubic root of 122101011 is about 496.1044088973.

Adding to 122101011 its reverse (110101221), we get a palindrome (232202232).

The spelling of 122101011 in words is "one hundred twenty-two million, one hundred one thousand, eleven".