1101211122021 has 8 divisors (see below), whose sum is σ = 1468290954240. Its totient is φ = 734136018912.

The previous prime is 1101211121993. The next prime is 1101211122101. The reversal of 1101211122021 is 1202211121011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1101211122021 - 2¹³ = 1101211113829 is a prime.

It is a super-2 number, since 2×1101211122021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211102021) 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, 597640 + ... + 1599873.

It is an arithmetic number, because the mean of its divisors is an integer number (183536369280).

Almost surely, 2^{1101211122021} is an apocalyptic number.

It is an amenable number.

1101211122021 is a deficient number, since it is larger than the sum of its proper divisors (367079832219).

1101211122021 is a wasteful number, since it uses less digits than its factorization.

1101211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364555.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101211122021 its reverse (1202211121011), we get a palindrome (2303422243032).

The spelling of 1101211122021 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".