1021121101211 has 16 divisors (see below), whose sum is σ = 1038092267520. Its totient is φ = 1004225103840.

The previous prime is 1021121101183. The next prime is 1021121101223. The reversal of 1021121101211 is 1121011211201.

It is a cyclic number.

It is not a de Polignac number, because 1021121101211 - 2¹⁴ = 1021121084827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021121100211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47353250 + ... + 47374808.

It is an arithmetic number, because the mean of its divisors is an integer number (64880766720).

Almost surely, 2^{1021121101211} is an apocalyptic number.

1021121101211 is a deficient number, since it is larger than the sum of its proper divisors (16971166309).

1021121101211 is an equidigital number, since it uses as much as digits as its factorization.

1021121101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23266.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1021121101211 its reverse (1121011211201), we get a palindrome (2142132312412).

The spelling of 1021121101211 in words is "one trillion, twenty-one billion, one hundred twenty-one million, one hundred one thousand, two hundred eleven".