21001154101114 has 12 divisors (see below), whose sum is σ = 34625869778682. Its totient is φ = 9545979136760.

The previous prime is 21001154101097. The next prime is 21001154101129. The reversal of 21001154101114 is 41110145110012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19403293776889 + 1597860324225 = 4404917^2 + 1264065^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43390814017 + ... + 43390814500.

Almost surely, 2^{21001154101114} is an apocalyptic number.

21001154101114 is a deficient number, since it is larger than the sum of its proper divisors (13624715677568).

21001154101114 is a wasteful number, since it uses less digits than its factorization.

21001154101114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86781628541 (or 86781628530 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 22.

Adding to 21001154101114 its reverse (41110145110012), we get a palindrome (62111299211126).

The spelling of 21001154101114 in words is "twenty-one trillion, one billion, one hundred fifty-four million, one hundred one thousand, one hundred fourteen".