1220101012011 has 16 divisors (see below), whose sum is σ = 1872772360704. Its totient is φ = 692111521344.

The previous prime is 1220101011959. The next prime is 1220101012021. The reversal of 1220101012011 is 1102101010221.

It is not a de Polignac number, because 1220101012011 - 2¹⁸ = 1220100749867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220101012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212041095 + ... + 212046848.

It is an arithmetic number, because the mean of its divisors is an integer number (117048272544).

Almost surely, 2^{1220101012011} is an apocalyptic number.

1220101012011 is a deficient number, since it is larger than the sum of its proper divisors (652671348693).

1220101012011 is a wasteful number, since it uses less digits than its factorization.

1220101012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424088090.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220101012011 its reverse (1102101010221), we get a palindrome (2322202022232).

The spelling of 1220101012011 in words is "one trillion, two hundred twenty billion, one hundred one million, twelve thousand, eleven".