1121211002021 has 8 divisors (see below), whose sum is σ = 1228624207104. Its totient is φ = 1014711952320.

The previous prime is 1121211002017. The next prime is 1121211002029. The reversal of 1121211002021 is 1202001121211.

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

It is not a de Polignac number, because 1121211002021 - 2² = 1121211002017 is a prime.

It is a super-2 number, since 2×1121211002021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121211001987 and 1121211002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121211002029) 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, 228536276 + ... + 228541181.

It is an arithmetic number, because the mean of its divisors is an integer number (153578025888).

Almost surely, 2^{1121211002021} is an apocalyptic number.

1121211002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121211002021 is a deficient number, since it is larger than the sum of its proper divisors (107413205083).

1121211002021 is a wasteful number, since it uses less digits than its factorization.

1121211002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457077691.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121211002021 its reverse (1202001121211), we get a palindrome (2323212123232).

The spelling of 1121211002021 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two thousand, twenty-one".