1101121421 has 8 divisors (see below), whose sum is σ = 1159471200. Its totient is φ = 1042811280.

The previous prime is 1101121363. The next prime is 1101121423. The reversal of 1101121421 is 1241211011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101121421 is a prime.

It is a super-3 number, since 3×1101121421³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101121396 and 1101121405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101121423) 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, 59735 + ... + 75963.

It is an arithmetic number, because the mean of its divisors is an integer number (144933900).

Almost surely, 2^1101121421 is an apocalyptic number.

It is an amenable number.

1101121421 is a deficient number, since it is larger than the sum of its proper divisors (58349779).

1101121421 is a wasteful number, since it uses less digits than its factorization.

1101121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19819.

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

The square root of 1101121421 is about 33183.1496546063. The cubic root of 1101121421 is about 1032.6307904364.

Adding to 1101121421 its reverse (1241211011), we get a palindrome (2342332432).

The spelling of 1101121421 in words is "one billion, one hundred one million, one hundred twenty-one thousand, four hundred twenty-one".